com.blazebit.persistence.impl.ParameterRegistrationVisitor Maven / Gradle / Ivy
/*
* Copyright 2014 - 2019 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.ArrayExpression;
import com.blazebit.persistence.parser.expression.ParameterExpression;
import com.blazebit.persistence.parser.expression.VisitorAdapter;
/**
*
* @author Moritz Becker
* @since 1.0.0
*/
public class ParameterRegistrationVisitor extends VisitorAdapter {
private final ParameterManager parameterManager;
private ClauseType clauseType;
private ClauseType secondClauseType;
private AbstractCommonQueryBuilder queryBuilder;
public ParameterRegistrationVisitor(ParameterManager parameterManager) {
this.parameterManager = parameterManager;
}
@Override
public void visit(ParameterExpression expression) {
// Value was not set so we only have an unsatisfied parameter name which we register
if (AbstractFullQueryBuilder.ID_PARAM_NAME.equals(expression.getName())) {
throw new IllegalArgumentException("The parameter name '" + expression.getName() + "' is reserved - use a different name");
} else {
parameterManager.registerParameterName(expression.getName(), expression.isCollectionValued(), clauseType, queryBuilder);
if (secondClauseType != null) {
parameterManager.registerParameterName(expression.getName(), expression.isCollectionValued(), secondClauseType, queryBuilder);
}
}
}
@Override
public void visit(ArrayExpression expression) {
expression.getBase().accept(this);
// The index will always end up in the on clause
ClauseType oldClauseType = secondClauseType;
secondClauseType = ClauseType.JOIN;
expression.getIndex().accept(this);
secondClauseType = oldClauseType;
}
public ClauseType getClauseType() {
return clauseType;
}
public void setClauseType(ClauseType clauseType) {
this.clauseType = clauseType;
}
public AbstractCommonQueryBuilder getQueryBuilder() {
return queryBuilder;
}
public void setQueryBuilder(AbstractCommonQueryBuilder queryBuilder) {
this.queryBuilder = queryBuilder;
}
}