/*
* 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 java.lang.reflect.Array;
import java.util.List;
import org.seasar.extension.sql.Node;
import org.seasar.extension.sql.SqlContext;
import org.seasar.framework.util.OgnlUtil;
/**
* INのバインド変数用の{@link Node}です。
*
* @author higa
*
*/
public class ParenBindVariableNode extends AbstractNode {
private String expression;
private Object parsedExpression;
/**
* <code>ParenBindVariableNode</code>を作成します。
*
* @param expression
*/
public ParenBindVariableNode(String expression) {
this.expression = expression;
this.parsedExpression = OgnlUtil.parseExpression(expression);
}
/**
* 式を返します。
*
* @return
*/
public String getExpression() {
return expression;
}
public void accept(SqlContext ctx) {
Object var = OgnlUtil.getValue(parsedExpression, ctx);
if (var instanceof List) {
bindArray(ctx, ((List) var).toArray());
} else if (var == null) {
return;
} else if (var.getClass().isArray()) {
bindArray(ctx, var);
} else {
ctx.addSql("?", var, var.getClass());
}
}
/**
* @param ctx
* @param array
*/
protected void bindArray(SqlContext ctx, Object array) {
int length = Array.getLength(array);
if (length == 0) {
return;
}
Class clazz = null;
for (int i = 0; i < length; ++i) {
Object o = Array.get(array, i);
if (o != null) {
clazz = o.getClass();
}
}
ctx.addSql("(");
Object value = Array.get(array, 0);
ctx.addSql("?", value, clazz);
for (int i = 1; i < length; ++i) {
ctx.addSql(", ");
value = Array.get(array, i);
ctx.addSql("?", value, clazz);
}
ctx.addSql(")");
}
}