content: /*****************************************************************
   *   Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
   *  with the License.  You may obtain a copy of the License at
   *
   *    https://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   ****************************************************************/
  
  package org.apache.cayenne.access.sqlbuilder;
  
  import org.apache.cayenne.access.sqlbuilder.sqltree.UpdateSetNode;
  import org.apache.cayenne.access.sqlbuilder.sqltree.TableNode;
  import org.apache.cayenne.access.sqlbuilder.sqltree.UpdateNode;
  import org.apache.cayenne.access.sqlbuilder.sqltree.WhereNode;
  import org.apache.cayenne.map.DbEntity;
  
  /**
   * @since 4.2
   */
  public class UpdateBuilder extends BaseBuilder {
  
      private static final int TABLE_NODE = 0;
      private static final int SET_NODE   = 1;
      private static final int WHERE_NODE = 2;
  
      public UpdateBuilder(String table) {
          super(new UpdateNode(), WHERE_NODE + 1);
          node(TABLE_NODE, () -> new TableNode(table, null));
      }
  
      public UpdateBuilder(DbEntity table) {
          super(new UpdateNode(), WHERE_NODE + 1);
          node(TABLE_NODE, () -> new TableNode(table, null));
      }
  
      public UpdateBuilder set(NodeBuilder setExpression) {
          node(SET_NODE, UpdateSetNode::new).addChild(setExpression.build());
          return this;
      }
  
      public UpdateBuilder where(NodeBuilder expression) {
          if(expression != null) {
              node(WHERE_NODE, WhereNode::new).addChild(expression.build());
          }
          return this;
      }
  
  }
  