#919 - io.ebean package initial

src/main/java/io/ebeaninternal/server/deploy/BeanEmbeddedMetaFactory.java

@@ -0,0 +1,54 @@
+package io.ebeaninternal.server.deploy;
+
+import java.util.Map;
+
+import javax.persistence.PersistenceException;
+
+import io.ebeaninternal.server.deploy.meta.DeployBeanPropertyAssocOne;
+
+/**
+ * Creates BeanProperties for Embedded beans that have deployment information
+ * such as the actual DB column name and table alias.
+ */
+public class BeanEmbeddedMetaFactory {
+
+  /**
+   * Create BeanProperties for embedded beans using the deployment specific DB column name and table alias.
+   */
+  public static BeanEmbeddedMeta create(BeanDescriptorMap owner, DeployBeanPropertyAssocOne<?> prop) {
+
+    // we can get a BeanDescriptor for an Embedded bean
+    // and know that it is NOT recursive, as Embedded beans are
+    // only allow to hold simple scalar types...
+    BeanDescriptor<?> targetDesc = owner.getBeanDescriptor(prop.getTargetType());
+    if (targetDesc == null) {
+      String msg = "Could not find BeanDescriptor for " + prop.getTargetType()
+          + ". Perhaps the EmbeddedId class is not registered?";
+      throw new PersistenceException(msg);
+    }
+
+    // deployment override information (column names)
+    String columnPrefix = prop.getColumnPrefix();
+    Map<String, String> propColMap = prop.getDeployEmbedded().getPropertyColumnMap();
+
+    BeanProperty[] sourceProperties = targetDesc.propertiesBaseScalar();
+    BeanProperty[] embeddedProperties = new BeanProperty[sourceProperties.length];
+
+    for (int i = 0; i < sourceProperties.length; i++) {
+      String propertyName = sourceProperties[i].getName();
+      String dbColumn = propColMap.get(propertyName);
+      if (dbColumn == null) {
+        // dbColumn not overridden so take original
+        dbColumn = sourceProperties[i].getDbColumn();
+        if (columnPrefix != null) {
+          dbColumn = columnPrefix + dbColumn;
+        }
+      }
+
+      BeanPropertyOverride overrides = new BeanPropertyOverride(dbColumn);
+      embeddedProperties[i] = new BeanProperty(sourceProperties[i], overrides);
+    }
+
+    return new BeanEmbeddedMeta(embeddedProperties);
+  }
+}