/*
* 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.
*/
/* Generated By:JJTree: Do not edit this line. AstEmpty.java */
package org.apache.el.parser;
import java.util.Collection;
import java.util.Map;
import jakarta.el.ELException;
import org.apache.el.lang.EvaluationContext;
public abstract class AstAbstractEmpty extends SimpleNode {
private final Boolean RETURN_EMPTY;
private final Boolean RETURN_NOT_EMPTY;
public AstAbstractEmpty(int id, boolean invert) {
super(id);
if (invert) {
RETURN_EMPTY = Boolean.FALSE;
RETURN_NOT_EMPTY = Boolean.TRUE;
} else {
RETURN_EMPTY = Boolean.TRUE;
RETURN_NOT_EMPTY = Boolean.FALSE;
}
}
@Override
public Class<?> getType(EvaluationContext ctx) throws ELException {
return Boolean.class;
}
@Override
public Object getValue(EvaluationContext ctx) throws ELException {
Object obj = this.children[0].getValue(ctx);
if (obj == null || obj instanceof String && ((String) obj).isEmpty() ||
obj instanceof Object[] && ((Object[]) obj).length == 0 ||
obj instanceof Collection<?> && ((Collection<?>) obj).isEmpty() ||
obj instanceof Map<?,?> && ((Map<?,?>) obj).isEmpty()) {
return RETURN_EMPTY;
}
return RETURN_NOT_EMPTY;
}
}