#919 - io.ebean package initial

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

@@ -0,0 +1,54 @@
+package io.ebeaninternal.server.deploy;
+
+import io.ebeaninternal.api.SpiQuery;
+import io.ebeaninternal.server.core.OrmQueryRequest;
+
+
+/**
+ * Creates Helpers specific to the type of the property (List Set or Map).
+ */
+public class BeanCollectionHelpFactory {
+
+  static final BeanListHelp LIST_HELP = new BeanListHelp();
+
+  static final BeanSetHelp SET_HELP = new BeanSetHelp();
+
+  /**
+   * Create the helper based on the many property.
+   */
+  public static <T> BeanCollectionHelp<T> create(BeanPropertyAssocMany<T> manyProperty) {
+
+    ManyType manyType = manyProperty.getManyType();
+    switch (manyType) {
+      case LIST:
+        return new BeanListHelp<>(manyProperty);
+      case SET:
+        return new BeanSetHelp<>(manyProperty);
+      case MAP:
+        return new BeanMapHelp<>(manyProperty);
+      default:
+        throw new RuntimeException("Invalid type " + manyType);
+    }
+
+  }
+
+  @SuppressWarnings("unchecked")
+  public static <T> BeanCollectionHelp<T> create(OrmQueryRequest<T> request) {
+
+    SpiQuery.Type manyType = request.getQuery().getType();
+
+    if (manyType.equals(SpiQuery.Type.LIST)) {
+      return LIST_HELP;
+
+    } else if (manyType.equals(SpiQuery.Type.SET)) {
+      return SET_HELP;
+
+    } else {
+      BeanDescriptor<T> target = request.getBeanDescriptor();
+      String mapKey = request.getQuery().getMapKey();
+      return new BeanMapHelp<>(target, mapKey);
+    }
+  }
+
+
+}