#919 - io.ebean package initial

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

@@ -0,0 +1,77 @@
+package io.ebeaninternal.server.deploy;
+
+import io.ebean.event.BeanPostLoad;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Handles multiple BeanPostLoad's for a given entity type.
+ */
+public class ChainedBeanPostLoad implements BeanPostLoad {
+
+	private final List<BeanPostLoad> list;
+
+	private final BeanPostLoad[] chain;
+
+	/**
+	 * Construct given the list of BeanPostLoad's.
+	 */
+	public ChainedBeanPostLoad(List<BeanPostLoad> list) {
+		this.list = list;
+		this.chain = list.toArray(new BeanPostLoad[list.size()]);
+	}
+
+	/**
+	 * Register a new BeanPostLoad and return the resulting chain.
+	 */
+	public ChainedBeanPostLoad register(BeanPostLoad c) {
+		if (list.contains(c)){
+			return this;
+		} else {
+			List<BeanPostLoad> newList = new ArrayList<>();
+			newList.addAll(list);
+			newList.add(c);
+
+			return new ChainedBeanPostLoad(newList);
+		}
+	}
+
+	/**
+	 * De-register a BeanPostLoad and return the resulting chain.
+	 */
+	public ChainedBeanPostLoad deregister(BeanPostLoad c) {
+		if (!list.contains(c)){
+			return this;
+		} else {
+			ArrayList<BeanPostLoad> newList = new ArrayList<>();
+			newList.addAll(list);
+			newList.remove(c);
+
+			return new ChainedBeanPostLoad(newList);
+		}
+	}
+
+  /**
+   * Return the size of the chain.
+   */
+  protected int size() {
+    return chain.length;
+  }
+
+  @Override
+  public boolean isRegisterFor(Class<?> cls) {
+    // never called
+    return false;
+  }
+
+  /**
+   * Fire postLoad on all registered BeanPostLoad implementations.
+   */
+  @Override
+	public void postLoad(Object bean) {
+    for (BeanPostLoad aChain : chain) {
+      aChain.postLoad(bean);
+    }
+	}
+}