mirror of
https://github.com/ebean-orm/ebean.git
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718 lines
21 KiB
Java
718 lines
21 KiB
Java
package com.avaje.ebeaninternal.server.deploy;
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import com.avaje.ebean.EbeanServer;
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import com.avaje.ebean.Query;
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import com.avaje.ebean.SqlUpdate;
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import com.avaje.ebean.Transaction;
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import com.avaje.ebean.ValuePair;
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import com.avaje.ebean.bean.EntityBean;
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import com.avaje.ebean.bean.PersistenceContext;
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import com.avaje.ebeaninternal.server.cache.CacheChangeSet;
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import com.avaje.ebeaninternal.server.cache.CachedBeanData;
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import com.avaje.ebeaninternal.server.core.DefaultSqlUpdate;
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import com.avaje.ebeaninternal.server.deploy.id.ImportedId;
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import com.avaje.ebeaninternal.server.deploy.meta.DeployBeanPropertyAssocOne;
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import com.avaje.ebeaninternal.server.el.ElPropertyChainBuilder;
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import com.avaje.ebeaninternal.server.el.ElPropertyValue;
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import com.avaje.ebeaninternal.server.query.SplitName;
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import com.avaje.ebeaninternal.server.query.SqlBeanLoad;
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import com.avaje.ebeaninternal.server.query.SqlJoinType;
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import com.avaje.ebeaninternal.server.text.json.ReadJson;
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import com.avaje.ebeaninternal.server.text.json.WriteJson;
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import javax.persistence.PersistenceException;
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import java.io.IOException;
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import java.sql.SQLException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* Property mapped to a joined bean.
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*/
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public class BeanPropertyAssocOne<T> extends BeanPropertyAssoc<T> {
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private final boolean oneToOne;
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private final boolean oneToOneExported;
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private final boolean importedPrimaryKey;
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private AssocOneHelp localHelp;
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protected final BeanProperty[] embeddedProps;
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private final HashMap<String, BeanProperty> embeddedPropsMap;
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/**
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* The information for Imported foreign Keys.
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*/
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protected ImportedId importedId;
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private ExportedProperty[] exportedProperties;
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private String deleteByParentIdSql;
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private String deleteByParentIdInSql;
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private BeanPropertyAssocMany<?> relationshipProperty;
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/**
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* Create based on deploy information of an EmbeddedId.
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*/
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public BeanPropertyAssocOne(BeanDescriptorMap owner, DeployBeanPropertyAssocOne<T> deploy) {
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this(owner, null, deploy);
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}
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/**
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* Create the property.
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*/
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public BeanPropertyAssocOne(BeanDescriptorMap owner, BeanDescriptor<?> descriptor,
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DeployBeanPropertyAssocOne<T> deploy) {
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super(descriptor, deploy);
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importedPrimaryKey = deploy.isImportedPrimaryKey();
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oneToOne = deploy.isOneToOne();
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oneToOneExported = deploy.isOneToOneExported();
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if (embedded) {
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// Overriding of the columns and use table alias of owning BeanDescriptor
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BeanEmbeddedMeta overrideMeta = BeanEmbeddedMetaFactory.create(owner, deploy);
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embeddedProps = overrideMeta.getProperties();
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embeddedPropsMap = new HashMap<String, BeanProperty>();
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for (int i = 0; i < embeddedProps.length; i++) {
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embeddedPropsMap.put(embeddedProps[i].getName(), embeddedProps[i]);
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}
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} else {
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embeddedProps = null;
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embeddedPropsMap = null;
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}
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}
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@Override
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public void initialise() {
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super.initialise();
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localHelp = createHelp(embedded, oneToOneExported);
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if (!isTransient) {
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//noinspection StatementWithEmptyBody
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if (embedded) {
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// no imported or exported information
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} else if (!oneToOneExported) {
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importedId = createImportedId(this, targetDescriptor, tableJoin);
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if (importedId.isScalar()) {
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// limit JoinColumn mapping to the @Id / primary key
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TableJoinColumn[] columns = tableJoin.columns();
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String foreignJoinColumn = columns[0].getForeignDbColumn();
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String foreignIdColumn = targetDescriptor.getIdProperty().getDbColumn();
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if (!foreignJoinColumn.equalsIgnoreCase(foreignIdColumn)) {
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throw new PersistenceException("Mapping limitation - @JoinColumn on " + getFullBeanName() + " needs to map to a primary key as per Issue #529 "
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+ " - joining to " + foreignJoinColumn + " and not " + foreignIdColumn);
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}
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}
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} else {
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exportedProperties = createExported();
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String delStmt = "delete from " + targetDescriptor.getBaseTable() + " where ";
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deleteByParentIdSql = delStmt + deriveWhereParentIdSql(false);
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deleteByParentIdInSql = delStmt + deriveWhereParentIdSql(true);
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}
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}
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}
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/**
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* Return the property value as an entity bean.
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*/
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public EntityBean getValueAsEntityBean(EntityBean owner) {
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return (EntityBean) getValue(owner);
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}
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void setRelationshipProperty(BeanPropertyAssocMany<?> relationshipProperty) {
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this.relationshipProperty = relationshipProperty;
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}
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/**
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* Return true if this relationship needs to maintain/update L2 cache.
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*/
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boolean isCacheNotify() {
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return targetDescriptor.isBeanCaching() && relationshipProperty != null;
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}
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/**
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* Clear the L2 relationship cache for this property.
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*/
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void cacheClear() {
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if (isCacheNotify()) {
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targetDescriptor.cacheManyPropClear(relationshipProperty.getName());
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}
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}
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/**
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* Clear part of the L2 relationship cache for this property.
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*/
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void cacheDelete(boolean clear, EntityBean bean, CacheChangeSet changeSet) {
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if (isCacheNotify()) {
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if (clear) {
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changeSet.addManyClear(targetDescriptor, relationshipProperty.getName());
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} else {
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Object assocBean = getValue(bean);
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if (assocBean != null) {
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Object parentId = targetDescriptor.getId((EntityBean) assocBean);
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if (parentId != null) {
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changeSet.addManyRemove(targetDescriptor, relationshipProperty.getName(), parentId);
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}
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}
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}
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}
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}
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public ElPropertyValue buildElPropertyValue(String propName, String remainder, ElPropertyChainBuilder chain, boolean propertyDeploy) {
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if (embedded) {
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BeanProperty embProp = embeddedPropsMap.get(remainder);
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if (embProp == null) {
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String msg = "Embedded Property " + remainder + " not found in " + getFullBeanName();
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throw new PersistenceException(msg);
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}
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if (chain == null) {
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chain = new ElPropertyChainBuilder(true, propName);
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}
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chain.add(this);
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return chain.add(embProp).build();
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}
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return createElPropertyValue(propName, remainder, chain, propertyDeploy);
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}
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@Override
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public String getElPlaceholder(boolean encrypted) {
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return encrypted ? elPlaceHolderEncrypted : elPlaceHolder;
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}
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public SqlUpdate deleteByParentId(Object parentId, List<Object> parentIdist) {
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if (parentId != null) {
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return deleteByParentId(parentId);
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} else {
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return deleteByParentIdList(parentIdist);
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}
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}
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private SqlUpdate deleteByParentIdList(List<Object> parentIdist) {
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StringBuilder sb = new StringBuilder(100);
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sb.append(deleteByParentIdInSql);
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String inClause = targetIdBinder.getIdInValueExpr(parentIdist.size());
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sb.append(inClause);
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DefaultSqlUpdate delete = new DefaultSqlUpdate(sb.toString());
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for (int i = 0; i < parentIdist.size(); i++) {
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targetIdBinder.bindId(delete, parentIdist.get(i));
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}
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return delete;
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}
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private SqlUpdate deleteByParentId(Object parentId) {
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DefaultSqlUpdate delete = new DefaultSqlUpdate(deleteByParentIdSql);
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if (exportedProperties.length == 1) {
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delete.addParameter(parentId);
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} else {
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targetDescriptor.getIdBinder().bindId(delete, parentId);
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}
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return delete;
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}
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public List<Object> findIdsByParentId(Object parentId, List<Object> parentIdist, Transaction t) {
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if (parentId != null) {
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return findIdsByParentId(parentId, t);
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} else {
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return findIdsByParentIdList(parentIdist, t);
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}
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}
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private List<Object> findIdsByParentId(Object parentId, Transaction t) {
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String rawWhere = deriveWhereParentIdSql(false);
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EbeanServer server = getBeanDescriptor().getEbeanServer();
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Query<?> q = server.find(getPropertyType())
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.where().raw(rawWhere).query();
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bindWhereParendId(q, parentId);
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return server.findIds(q, t);
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}
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private List<Object> findIdsByParentIdList(List<Object> parentIdist, Transaction t) {
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String rawWhere = deriveWhereParentIdSql(true);
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String inClause = targetIdBinder.getIdInValueExpr(parentIdist.size());
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String expr = rawWhere + inClause;
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EbeanServer server = getBeanDescriptor().getEbeanServer();
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Query<?> q = (Query<?>) server.find(getPropertyType())
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.where().raw(expr);
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for (int i = 0; i < parentIdist.size(); i++) {
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bindWhereParendId(q, parentIdist.get(i));
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}
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return server.findIds(q, t);
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}
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private void bindWhereParendId(Query<?> q, Object parentId) {
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if (exportedProperties.length == 1) {
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q.setParameter(1, parentId);
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} else {
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int pos = 1;
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EntityBean parent = (EntityBean) parentId;
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for (int i = 0; i < exportedProperties.length; i++) {
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Object embVal = exportedProperties[i].getValue(parent);
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q.setParameter(pos++, embVal);
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}
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}
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}
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void addFkey() {
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if (importedId != null) {
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importedId.addFkeys(name);
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}
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}
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/**
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* Return meta data for the deployment of the embedded bean specific to this
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* property.
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*/
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public BeanProperty[] getProperties() {
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return embeddedProps;
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}
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@Override
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public void buildRawSqlSelectChain(String prefix, List<String> selectChain) {
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prefix = SplitName.add(prefix, name);
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if (!embedded) {
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InheritInfo inheritInfo = targetDescriptor.getInheritInfo();
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if (inheritInfo != null) {
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// expect the discriminator column to be included in order
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// to determine the inheritance type so we add it to the
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// selectChain (so that it takes a position in the resultSet)
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String discriminatorColumn = inheritInfo.getDiscriminatorColumn();
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String discProperty = prefix + "." + discriminatorColumn;
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selectChain.add(discProperty);
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}
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targetIdBinder.buildRawSqlSelectChain(prefix, selectChain);
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} else {
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for (int i = 0; i < embeddedProps.length; i++) {
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embeddedProps[i].buildRawSqlSelectChain(prefix, selectChain);
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}
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}
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}
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/**
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* Return true if this a OneToOne property. Otherwise assumed ManyToOne.
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*/
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public boolean isOneToOne() {
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return oneToOne;
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}
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/**
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* Return true if this is the exported side of a OneToOne.
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*/
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public boolean isOneToOneExported() {
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return oneToOneExported;
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}
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/**
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* If true this bean maps to the primary key.
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*/
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public boolean isImportedPrimaryKey() {
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return importedPrimaryKey;
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}
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@Override
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public void diffForInsert(String prefix, Map<String, ValuePair> map, EntityBean newBean) {
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Object newEmb = (newBean == null) ? null : getValue(newBean);
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if (newEmb != null) {
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prefix = (prefix == null) ? name : prefix + "." + name;
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if (embedded) {
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getTargetDescriptor().diffForInsert(prefix, map, (EntityBean) newEmb);
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} else {
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// we are only interested in the Id value
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BeanDescriptor<T> targetDescriptor = getTargetDescriptor();
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BeanProperty idProperty = targetDescriptor.getIdProperty();
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idProperty.diffForInsert(prefix, map, (EntityBean) newEmb);
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}
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}
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}
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@Override
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public void diff(String prefix, Map<String, ValuePair> map, EntityBean newBean, EntityBean oldBean) {
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Object newEmb = (newBean == null) ? null : getValue(newBean);
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Object oldEmb = (oldBean == null) ? null : getValue(oldBean);
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if (newEmb == null && oldEmb == null) {
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return;
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}
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if (embedded) {
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prefix = (prefix == null) ? name : prefix + "." + name;
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BeanDescriptor<T> targetDescriptor = getTargetDescriptor();
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targetDescriptor.diff(prefix, map, (EntityBean) newEmb, (EntityBean) oldEmb);
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} else {
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// we are only interested in the Id value
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newBean = (EntityBean)newEmb;
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oldBean = (EntityBean)oldEmb;
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BeanDescriptor<T> targetDescriptor = getTargetDescriptor();
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BeanProperty idProperty = targetDescriptor.getIdProperty();
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Object newId = (newBean == null) ? null : idProperty.getValue(newBean);
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Object oldId = (oldBean == null) ? null : idProperty.getValue(oldBean);
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if (newId != null || oldId != null) {
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prefix = (prefix == null) ? name : prefix + "." + name;
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idProperty.diffVal(prefix, map, newId, oldId);
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}
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}
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}
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/**
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* Same as getPropertyType(). Return the type of the bean this property
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* represents.
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*/
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public Class<?> getTargetType() {
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return getPropertyType();
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}
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@Override
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public Object getCacheDataValue(EntityBean bean) {
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Object ap = getValue(bean);
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if (ap == null) {
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return null;
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}
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if (embedded) {
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return targetDescriptor.cacheEmbeddedBeanExtract((EntityBean) ap);
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} else {
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return targetDescriptor.getIdProperty().getCacheDataValue((EntityBean) ap);
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}
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}
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@Override
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public void setCacheDataValue(EntityBean bean, Object cacheData, PersistenceContext context) {
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if (cacheData == null) {
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setValue(bean, null);
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} else {
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if (embedded) {
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setValue(bean, targetDescriptor.cacheEmbeddedBeanLoad((CachedBeanData) cacheData, context));
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} else {
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if (cacheData instanceof String) {
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cacheData = targetDescriptor.getIdProperty().scalarType.parse((String)cacheData);
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}
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// cacheData is the id value, maybe already in persistence context
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Object assocBean = targetDescriptor.contextGet(context, cacheData);
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if (assocBean == null) {
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assocBean = targetDescriptor.createReference(Boolean.FALSE, cacheData, context);
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}
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setValue(bean, assocBean);
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}
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}
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}
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/**
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* Return the Id values from the given bean.
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*/
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@Override
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public Object[] getAssocIdValues(EntityBean bean) {
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return targetDescriptor.getIdBinder().getIdValues(bean);
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}
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/**
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* Return the Id expression to add to where clause etc.
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*/
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public String getAssocIdExpression(String prefix, String operator) {
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return targetDescriptor.getIdBinder().getAssocOneIdExpr(prefix, operator);
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}
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/**
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* Return the logical id value expression taking into account embedded id's.
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*/
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@Override
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public String getAssocIdInValueExpr(int size) {
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return targetDescriptor.getIdBinder().getIdInValueExpr(size);
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}
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/**
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* Return the logical id in expression taking into account embedded id's.
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*/
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@Override
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public String getAssocIdInExpr(String prefix) {
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return targetDescriptor.getIdBinder().getAssocIdInExpr(prefix);
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}
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@Override
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public boolean isAssocId() {
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return !embedded;
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}
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@Override
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public boolean isAssocProperty() {
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return !embedded;
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}
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/**
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* Create a bean of the target type to be used as an embeddedId
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* value.
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*/
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public Object createEmbeddedId() {
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return getTargetDescriptor().createEntityBean();
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}
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@Override
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public Object pathGetNested(Object bean) {
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Object value = getValueIntercept((EntityBean)bean);
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if (value == null) {
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value = targetDescriptor.createEntityBean();
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setValueIntercept((EntityBean)bean, value);
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}
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return value;
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}
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public ImportedId getImportedId() {
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return importedId;
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}
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private String deriveWhereParentIdSql(boolean inClause) {
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < exportedProperties.length; i++) {
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String fkColumn = exportedProperties[i].getForeignDbColumn();
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if (i > 0) {
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String s = inClause ? "," : " and ";
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sb.append(s);
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}
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sb.append(fkColumn);
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if (!inClause) {
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sb.append("=? ");
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}
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}
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return sb.toString();
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}
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/**
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* Create the array of ExportedProperty used to build reference objects.
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*/
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private ExportedProperty[] createExported() {
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BeanProperty idProp = descriptor.getIdProperty();
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ArrayList<ExportedProperty> list = new ArrayList<ExportedProperty>();
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if (idProp != null && idProp.isEmbedded()) {
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BeanPropertyAssocOne<?> one = (BeanPropertyAssocOne<?>) idProp;
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BeanDescriptor<?> targetDesc = one.getTargetDescriptor();
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BeanProperty[] emIds = targetDesc.propertiesBaseScalar();
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try {
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for (int i = 0; i < emIds.length; i++) {
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ExportedProperty expProp = findMatch(true, emIds[i]);
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list.add(expProp);
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}
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} catch (PersistenceException e) {
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// not found as individual scalar properties
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e.printStackTrace();
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}
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} else {
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if (idProp != null) {
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ExportedProperty expProp = findMatch(false, idProp);
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list.add(expProp);
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}
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}
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return list.toArray(new ExportedProperty[list.size()]);
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}
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/**
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* Find the matching foreignDbColumn for a given local property.
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*/
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private ExportedProperty findMatch(boolean embeddedProp, BeanProperty prop) {
|
|
|
|
String matchColumn = prop.getDbColumn();
|
|
|
|
String searchTable = tableJoin.getTable();
|
|
TableJoinColumn[] columns = tableJoin.columns();
|
|
|
|
for (int i = 0; i < columns.length; i++) {
|
|
String matchTo = columns[i].getLocalDbColumn();
|
|
|
|
if (matchColumn.equalsIgnoreCase(matchTo)) {
|
|
String foreignCol = columns[i].getForeignDbColumn();
|
|
return new ExportedProperty(embeddedProp, foreignCol, prop);
|
|
}
|
|
}
|
|
|
|
String msg = "Error with the Join on [" + getFullBeanName()
|
|
+ "]. Could not find the matching foreign key for [" + matchColumn + "] in table[" + searchTable + "]?"
|
|
+ " Perhaps using a @JoinColumn with the name/referencedColumnName attributes swapped?";
|
|
throw new PersistenceException(msg);
|
|
}
|
|
|
|
|
|
@Override
|
|
public void appendSelect(DbSqlContext ctx, boolean subQuery) {
|
|
if (!isTransient) {
|
|
localHelp.appendSelect(ctx, subQuery);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void appendFrom(DbSqlContext ctx, SqlJoinType joinType) {
|
|
if (!isTransient) {
|
|
localHelp.appendFrom(ctx, joinType);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public Object readSet(DbReadContext ctx, EntityBean bean) throws SQLException {
|
|
return localHelp.readSet(ctx, bean);
|
|
}
|
|
|
|
/**
|
|
* Read the data from the resultSet effectively ignoring it and returning null.
|
|
*/
|
|
@Override
|
|
public Object read(DbReadContext ctx) throws SQLException {
|
|
// just read the resultSet incrementing the column index
|
|
// pass in null for the bean so any data read is ignored
|
|
return localHelp.read(ctx);
|
|
}
|
|
|
|
@Override
|
|
public void setValue(EntityBean bean, Object value) {
|
|
super.setValue(bean, value);
|
|
if (embedded && value instanceof EntityBean) {
|
|
setEmbeddedOwner(bean, value);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the owner on the embedded bean property.
|
|
*/
|
|
void setEmbeddedOwner(EntityBean owner) {
|
|
|
|
Object emb = getValue(owner);
|
|
if (emb != null) {
|
|
setEmbeddedOwner(owner, emb);
|
|
}
|
|
}
|
|
|
|
private void setEmbeddedOwner(EntityBean bean, Object value) {
|
|
((EntityBean)value)._ebean_getIntercept().setEmbeddedOwner(bean, propertyIndex);
|
|
}
|
|
|
|
@Override
|
|
public void setValueIntercept(EntityBean bean, Object value) {
|
|
super.setValueIntercept(bean, value);
|
|
if (embedded && value instanceof EntityBean) {
|
|
setEmbeddedOwner(bean, value);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void loadIgnore(DbReadContext ctx) {
|
|
localHelp.loadIgnore(ctx);
|
|
}
|
|
|
|
@Override
|
|
public void load(SqlBeanLoad sqlBeanLoad) {
|
|
Object dbVal = sqlBeanLoad.load(this);
|
|
if (embedded && sqlBeanLoad.isLazyLoad()) {
|
|
if (dbVal instanceof EntityBean) {
|
|
((EntityBean) dbVal)._ebean_getIntercept().setLoaded();
|
|
}
|
|
}
|
|
}
|
|
|
|
private AssocOneHelp createHelp(boolean embedded, boolean oneToOneExported) {
|
|
if (embedded) {
|
|
return new AssocOneHelpEmbedded(this);
|
|
} else if (oneToOneExported) {
|
|
return new AssocOneHelpRefExported(this);
|
|
} else {
|
|
if (targetInheritInfo != null) {
|
|
return new AssocOneHelpRefInherit(this);
|
|
} else {
|
|
return new AssocOneHelpRefSimple(this);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void jsonWrite(WriteJson writeJson, EntityBean bean) throws IOException {
|
|
|
|
if (!jsonSerialize) {
|
|
return;
|
|
}
|
|
|
|
Object value = getValueIntercept(bean);
|
|
if (value == null) {
|
|
writeJson.writeNullField(name);
|
|
|
|
} else {
|
|
//noinspection StatementWithEmptyBody
|
|
if (writeJson.isParentBean(value)) {
|
|
// bi-directional and already rendered parent
|
|
|
|
} else {
|
|
// Hmmm, not writing complex non-entity bean
|
|
if (value instanceof EntityBean) {
|
|
writeJson.beginAssocOne(name, bean);
|
|
BeanDescriptor<?> refDesc = descriptor.getBeanDescriptor(value.getClass());
|
|
refDesc.jsonWrite(writeJson, (EntityBean) value, name);
|
|
writeJson.endAssocOne();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void jsonRead(ReadJson readJson, EntityBean bean) throws IOException {
|
|
if (jsonDeserialize && targetDescriptor != null) {
|
|
T assocBean = targetDescriptor.jsonRead(readJson, name);
|
|
setValue(bean, assocBean);
|
|
}
|
|
}
|
|
|
|
public boolean isReference(Object detailBean) {
|
|
EntityBean eb = (EntityBean) detailBean;
|
|
return targetDescriptor.isReference(eb._ebean_getIntercept());
|
|
}
|
|
|
|
/**
|
|
* Set the parent bean to the child bean if it has not already been set.
|
|
*/
|
|
public void setParentBeanToChild(EntityBean parent, EntityBean child) {
|
|
|
|
if (mappedBy != null) {
|
|
BeanProperty beanProperty = targetDescriptor.getBeanProperty(mappedBy);
|
|
if (beanProperty != null && beanProperty.getValue(child) == null) {
|
|
// set the 'parent' bean to the 'child' bean
|
|
beanProperty.setValue(child, parent);
|
|
}
|
|
}
|
|
}
|
|
}
|