/* * Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software;Designed and Developed mainly by many Chinese * opensource volunteers. you can redistribute it and/or modify it under the * terms of the GNU General Public License version 2 only, as published by the * Free Software Foundation. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Any questions about this component can be directed to it's project Web address * https://code.google.com/p/opencloudb/. * */ package com.akiban.sql.parser; import com.akiban.sql.StandardException; import com.akiban.sql.types.DataTypeDescriptor; /** * This node type converts a value in the SQL domain to a value in the Java * domain. */ public class SQLToJavaValueNode extends JavaValueNode { ValueNode value; /** * Constructor for a SQLToJavaValueNode * * @param value A ValueNode representing a SQL value to convert to * the Java domain. */ public void init(Object value) { this.value = (ValueNode)value; } /** * Fill this node with a deep copy of the given node. */ public void copyFrom(QueryTreeNode node) throws StandardException { super.copyFrom(node); SQLToJavaValueNode other = (SQLToJavaValueNode)node; this.value = (ValueNode)getNodeFactory().copyNode(other.value, getParserContext()); } /** * Prints the sub-nodes of this object. See QueryTreeNode.java for * how tree printing is supposed to work. * * @param depth The depth of this node in the tree */ public void printSubNodes(int depth) { super.printSubNodes(depth); if (value != null) { printLabel(depth, "value: "); value.treePrint(depth + 1); } } /** * Override behavior in superclass. */ public DataTypeDescriptor getType() throws StandardException { return value.getType(); } /** * Get the SQL ValueNode that is being converted to a JavaValueNode * * @return The underlying SQL ValueNode */ public ValueNode getSQLValueNode() { return value; } public void setSQLValueNode(ValueNode value) { this.value = value; } /** @see ValueNode#getConstantValueAsObject * * @exception StandardException Thrown on error */ Object getConstantValueAsObject() throws StandardException { return value.getConstantValueAsObject(); } /** * Accept the visitor for all visitable children of this node. * * @param v the visitor * * @exception StandardException on error */ void acceptChildren(Visitor v) throws StandardException { super.acceptChildren(v); if (value != null) { value = (ValueNode)value.accept(v); } } }