initial add of EbeanORM server based on v2.8.1

src/main/java/com/avaje/ebeaninternal/server/el/ElPropertyChainBuilder.java

@@ -0,0 +1,83 @@
+/**
+ * Copyright (C) 2006  Robin Bygrave
+ * 
+ * This file is part of Ebean.
+ * 
+ * Ebean is free software; you can redistribute it and/or modify it 
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *  
+ * Ebean is distributed in the hope that it will be useful, but 
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Ebean; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA  
+ */
+package com.avaje.ebeaninternal.server.el;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Utility object used to build a ElPropertyChain.
+ * <p>
+ * Builds a ElPropertyChain based on a chain of properties with dot separators.
+ * </p>
+ * <p>
+ * This can navigate an object graph based on dot notation such as
+ * order.customer.name.
+ * </p>
+ */
+public class ElPropertyChainBuilder {
+
+	private final String expression;
+
+	private final List<ElPropertyValue> chain = new ArrayList<ElPropertyValue>();
+
+	private final boolean embedded;
+	
+	private boolean containsMany;
+	
+	/**
+	 * Create with the original expression.
+	 */
+	public ElPropertyChainBuilder(boolean embedded, String expression) {
+		this.embedded = embedded;
+		this.expression = expression;
+	}
+	
+	public boolean isContainsMany() {
+		return containsMany;
+	}
+
+	public void setContainsMany(boolean containsMany) {
+		this.containsMany = containsMany;
+	}
+
+	public String getExpression() {
+		return expression;
+	}
+
+	/**
+	 * Add a ElGetValue element to the chain.
+	 */
+	public ElPropertyChainBuilder add(ElPropertyValue element) {
+	    if (element == null){
+	        throw new NullPointerException("element null in expression "+expression);
+	    }
+		chain.add(element);
+		return this;
+	}
+
+	/**
+	 * Build the immutable ElGetChain from the build information.
+	 */
+	public ElPropertyChain build() {
+		return new ElPropertyChain(containsMany, embedded, expression, chain.toArray(new ElPropertyValue[chain.size()]));
+	}
+
+}