com.blazebit.persistence.criteria.impl.ParameterVisitor Maven / Gradle / Ivy
/*
* Copyright 2014 - 2021 Blazebit.
*
* 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 com.blazebit.persistence.criteria.impl;
import com.blazebit.persistence.criteria.impl.expression.AbstractSelection;
import javax.persistence.criteria.ParameterExpression;
import javax.persistence.criteria.Selection;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* @author Christian Beikov
* @since 1.2.0
*/
public final class ParameterVisitor {
private final Set> parameters = new LinkedHashSet>();
public Set> getParameters() {
return parameters;
}
public void add(ParameterExpression parameter) {
parameters.add(parameter);
}
public void visit(Selection s) {
if (s instanceof AbstractSelection) {
((AbstractSelection) s).visitParameters(this);
}
}
}