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Copyright (c) 1997-2013, www.tinygroup.org (luo_guo@icloud.com). Licensed under the GPL, Version 3.0 (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.gnu.org/licenses/gpl.html 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.tinygroup.template.rumtime.operator;
Created by luoguo on 2014/6/5.
public class SimpleConditionOperator extends TwoOperator {
    protected Object operation(Object leftObject right) {
        //如果为空返回right
        if (left == null) {
            return right;
        }
        if (left instanceof Collection) {
            Collection collection = (Collectionleft;
            if (collection.size() == 0) {
                return right;
            }
        }
        if (left instanceof Map) {
            Map map = (Mapleft;
            if (map.size() == 0) {
                return right;
            }
        }
        if (left.getClass().isArray() &&ArrayUtil.arrayLength(left) == 0) {
                return right;
        }
        if (left instanceof Iterator) {
            Iterator iterator= (Iteratorleft;
            if ( iterator.hasNext()) {
                return right;
            }
        }
        if (left instanceof Enumerator) {
            Enumerator enumerator= (Enumeratorleft;
            if ( enumerator.hasMoreElements()) {
                return right;
            }
        }
        return left;
    }
    public String getOperation() {
        return "?:";
    }
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