org.apache.ibatis.ognl.IteratorPropertyAccessor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of mybatis Show documentation

The MyBatis SQL mapper framework makes it easier to use a relational database with object-oriented applications. MyBatis couples objects with stored procedures or SQL statements using a XML descriptor or annotations. Simplicity is the biggest advantage of the MyBatis data mapper over object relational mapping tools.

The newest version!

/*
 * 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
 *
 *   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.apache.ibatis.ognl;

import java.util.Iterator;

/**
 * Implementation of PropertyAccessor that provides "property" reference to
 * "next" and "hasNext".
 */
public class IteratorPropertyAccessor extends ObjectPropertyAccessor implements PropertyAccessor {

    public Object getProperty(OgnlContext context, Object target, Object name) throws OgnlException {
        Object result;
        Iterator iterator = (Iterator) target;

        if (name instanceof String) {
            if (name.equals("next")) {
                result = iterator.next();
            } else {
                if (name.equals("hasNext")) {
                    result = iterator.hasNext() ? Boolean.TRUE : Boolean.FALSE;
                } else {
                    result = super.getProperty(context, target, name);
                }
            }
        } else {
            result = super.getProperty(context, target, name);
        }
        return result;
    }

    public void setProperty(OgnlContext context, Object target, Object name, Object value) throws OgnlException {
        throw new IllegalArgumentException("can't set property " + name + " on Iterator");
    }

}