/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* Licensed 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
*
* http://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.seasar.extension.sql.node;
import org.seasar.extension.sql.Node;
import org.seasar.extension.sql.SqlContext;
import org.seasar.framework.beans.BeanDesc;
import org.seasar.framework.beans.PropertyDesc;
import org.seasar.framework.beans.factory.BeanDescFactory;
import org.seasar.framework.util.StringUtil;
/**
* バインド変数のための{@link Node}です。
*
* @author higa
*
*/
public class BindVariableNode extends AbstractNode {
private String expression;
private String[] names;
/**
* <code>BindVariableNode</code>を作成します。
*
* @param expression
*/
public BindVariableNode(String expression) {
this.expression = expression;
names = StringUtil.split(expression, ".");
}
/**
* 式を返します。
*
* @return
*/
public String getExpression() {
return expression;
}
public void accept(SqlContext ctx) {
Object value = ctx.getArg(names[0]);
Class clazz = ctx.getArgType(names[0]);
for (int pos = 1; pos < names.length; pos++) {
BeanDesc beanDesc = BeanDescFactory.getBeanDesc(clazz);
PropertyDesc pd = beanDesc.getPropertyDesc(names[pos]);
if (value == null) {
break;
}
value = pd.getValue(value);
clazz = pd.getPropertyType();
}
ctx.addSql("?", value, clazz);
}
}