#919 - io.ebean package initial

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

@@ -0,0 +1,63 @@
+package io.ebeaninternal.server.deploy;
+
+import io.ebean.bean.EntityBean;
+import io.ebeaninternal.server.core.InternString;
+
+/**
+ * The Exported foreign key and property.
+ * <p>
+ * Used to for Assoc Manys to create references etc.
+ * </p>
+ */
+public class ExportedProperty {
+
+  private final String foreignDbColumn;
+
+  private final BeanProperty property;
+
+  private final boolean embedded;
+
+  public ExportedProperty(boolean embedded, String foreignDbColumn, BeanProperty property) {
+    this.embedded = embedded;
+    this.foreignDbColumn = InternString.intern(foreignDbColumn);
+    this.property = property;
+  }
+
+  /**
+   * Return true if this is part of an embedded concatinated key.
+   */
+  public boolean isEmbedded() {
+    return embedded;
+  }
+
+  /**
+   * Return the property value from the bean.
+   */
+  public Object getValue(EntityBean bean) {
+    return property.getValue(bean);
+  }
+
+  /**
+   * Return the foreign database column matching this property.
+   * <p>
+   * We use this foreign database column in the query predicates
+   * in preference to a parentProperty.idProperty = value.
+   * Just using the foreign database column avoids triggering
+   * a join to the 'parent' table.
+   * </p>
+   */
+  public String getForeignDbColumn() {
+    return foreignDbColumn;
+  }
+
+  /**
+   * Append a logical where for the foreign db column to logical property name,
+   */
+  public void appendWhere(StringBuilder sb, String path) {
+    sb.append(foreignDbColumn).append(" = ");
+    if (path != null) {
+      sb.append(path).append(".");
+    }
+    sb.append(property.getName());
+  }
+}