#919 - io.ebean package initial

src/main/java/io/ebeaninternal/server/query/SqlTreeNode.java

@@ -0,0 +1,82 @@
+package io.ebeaninternal.server.query;
+
+import io.ebean.Version;
+import io.ebean.bean.EntityBean;
+import io.ebeaninternal.api.SpiQuery;
+import io.ebeaninternal.server.deploy.BeanProperty;
+import io.ebeaninternal.server.deploy.DbReadContext;
+import io.ebeaninternal.server.deploy.DbSqlContext;
+
+import java.sql.SQLException;
+import java.util.List;
+
+interface SqlTreeNode {
+
+  String COMMA = ", ";
+
+  /**
+   * Build the select chain for a RawSql query.
+   */
+  void buildRawSqlSelectChain(List<String> selectChain);
+
+  /**
+   * Return true if this node includes an aggregation.
+   */
+  boolean isAggregation();
+
+  /**
+   * Append the required column information to the SELECT part of the sql
+   * statement.
+   */
+  void appendSelect(DbSqlContext ctx, boolean subQuery);
+
+  /**
+   * Append the group by clause.
+   */
+  void appendGroupBy(DbSqlContext ctx, boolean subQuery);
+
+  /**
+   * Append to the FROM part of the sql.
+   */
+  void appendFrom(DbSqlContext ctx, SqlJoinType joinType);
+
+  /**
+   * Append any where predicates for inheritance.
+   */
+  void appendWhere(DbSqlContext ctx);
+
+  /**
+   * Recurse through the tree adding an table alias' for @History entity beans.
+   */
+  void addAsOfTableAlias(SpiQuery<?> query);
+
+  /**
+   * Recurse through the tree adding soft delete predicates if necessary.
+   */
+  void addSoftDeletePredicate(SpiQuery<?> query);
+
+  /**
+   * Load the appropriate information from the SqlSelectReader.
+   * <p>
+   * At a high level this actually controls the reading of the data from the
+   * jdbc resultSet and putting it into the bean etc.
+   * </p>
+   */
+  EntityBean load(DbReadContext ctx, EntityBean localBean, EntityBean contextBean) throws SQLException;
+
+  /**
+   * Load a version of a @History bean with effective dates.
+   */
+  <T> Version<T> loadVersion(DbReadContext ctx) throws SQLException;
+
+  /**
+   * Return true if the query has a many join.
+   */
+  boolean hasMany();
+
+  /**
+   * Return the property for singleAttribute query.
+   */
+  BeanProperty getSingleProperty();
+
+}