com.blazebit.persistence.impl.AbstractManager Maven / Gradle / Ivy
/*
* Copyright 2014 - 2020 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.impl;
import com.blazebit.persistence.parser.expression.Expression;
import com.blazebit.persistence.parser.expression.modifier.ExpressionModifier;
import com.blazebit.persistence.impl.transform.ExpressionModifierVisitor;
import java.util.Iterator;
import java.util.Set;
/**
*
* @author Moritz Becker
* @since 1.0.0
*/
public abstract class AbstractManager {
protected final ResolvingQueryGenerator queryGenerator;
protected final ParameterManager parameterManager;
protected final SubqueryInitiatorFactory subqueryInitFactory;
protected AbstractManager(ResolvingQueryGenerator queryGenerator, ParameterManager parameterManager, SubqueryInitiatorFactory subqueryInitFactory) {
this.queryGenerator = queryGenerator;
this.parameterManager = parameterManager;
this.subqueryInitFactory = subqueryInitFactory;
}
protected void registerParameterExpressions(Expression expression) {
parameterManager.collectParameterRegistrations(expression, getClauseType(), subqueryInitFactory.getQueryBuilder());
}
protected void unregisterParameterExpressions(Expression expression) {
parameterManager.collectParameterUnregistrations(expression, getClauseType(), subqueryInitFactory.getQueryBuilder());
}
protected void build(StringBuilder sb, Set clauses) {
Iterator iter = clauses.iterator();
if (iter.hasNext()) {
sb.append(iter.next());
}
while (iter.hasNext()) {
sb.append(", ");
sb.append(iter.next());
}
}
public abstract void apply(ExpressionModifierVisitor visitor);
public abstract ClauseType getClauseType();
}