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com.blazebit.persistence.impl.JpqlMacroAwareExpressionFactory 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.Expression;
import com.blazebit.persistence.parser.expression.ExpressionFactory;
import com.blazebit.persistence.parser.expression.MacroConfiguration;
import com.blazebit.persistence.parser.expression.PathElementExpression;
import com.blazebit.persistence.parser.expression.PathExpression;
import com.blazebit.persistence.parser.expression.PropertyExpression;
import com.blazebit.persistence.parser.predicate.Predicate;
import java.util.List;
import java.util.Set;
/**
*
* @author Christian Beikov
* @since 1.2.0
*/
public final class JpqlMacroAwareExpressionFactory implements ExpressionFactory {
private final ExpressionFactory expressionFactory;
private final JpqlMacroStorage macroStorage;
public JpqlMacroAwareExpressionFactory(ExpressionFactory expressionFactory, JpqlMacroStorage macroStorage) {
this.expressionFactory = expressionFactory;
this.macroStorage = macroStorage;
}
@Override
public T unwrap(Class clazz) {
if (JpqlMacroAwareExpressionFactory.class.isAssignableFrom(clazz)) {
return (T) this;
}
return expressionFactory.unwrap(clazz);
}
@Override
public MacroConfiguration getDefaultMacroConfiguration() {
return macroStorage.getMacroConfiguration();
}
@Override
public Expression createJoinPathExpression(String expression) {
return createJoinPathExpression(expression, getDefaultMacroConfiguration(), null);
}
@Override
public Expression createJoinPathExpression(String expression, MacroConfiguration macroConfiguration, Set usedMacros) {
Expression pathExpression = createPathExpression(expression, macroConfiguration, usedMacros);
if (pathExpression instanceof PathExpression) {
List expressions = ((PathExpression) pathExpression).getExpressions();
PathElementExpression first;
if (expressions.size() > 1 || (first = expressions.get(0)) instanceof PropertyExpression || first instanceof ArrayExpression) {
return pathExpression;
}
return first;
}
return pathExpression;
}
@Override
public PathExpression createPathExpression(String expression) {
return (PathExpression) expressionFactory.createPathExpression(expression, getDefaultMacroConfiguration(), null);
}
@Override
public Expression createPathExpression(String expression, MacroConfiguration macroConfiguration, Set usedMacros) {
return expressionFactory.createPathExpression(expression, macroConfiguration, usedMacros);
}
@Override
public Expression createSimpleExpression(String expression) {
return expressionFactory.createSimpleExpression(expression, false, false, false, getDefaultMacroConfiguration(), null);
}
@Override
public Expression createSimpleExpression(String expression, boolean allowQuantifiedPredicates) {
return expressionFactory.createSimpleExpression(expression, false, allowQuantifiedPredicates, false, getDefaultMacroConfiguration(), null);
}
@Override
public Expression createSimpleExpression(String expression, boolean allowOuter, boolean allowQuantifiedPredicates) {
return expressionFactory.createSimpleExpression(expression, allowOuter, allowQuantifiedPredicates, false, getDefaultMacroConfiguration(), null);
}
@Override
public Expression createSimpleExpression(String expression, boolean allowOuter, boolean allowQuantifiedPredicates, boolean allowObjectExpression) {
return expressionFactory.createSimpleExpression(expression, allowOuter, allowQuantifiedPredicates, allowObjectExpression, getDefaultMacroConfiguration(), null);
}
@Override
public Expression createSimpleExpression(String expression, boolean allowOuter, boolean allowQuantifiedPredicates, boolean allowObjectExpression, MacroConfiguration macroConfiguration, Set usedMacros) {
return expressionFactory.createSimpleExpression(expression, allowOuter, allowQuantifiedPredicates, allowObjectExpression, macroConfiguration, usedMacros);
}
@Override
public List createInItemExpressions(String[] parameterOrLiteralExpressions) {
return expressionFactory.createInItemExpressions(parameterOrLiteralExpressions, getDefaultMacroConfiguration(), null);
}
@Override
public List createInItemExpressions(String[] parameterOrLiteralExpressions, MacroConfiguration macroConfiguration, Set usedMacros) {
return expressionFactory.createInItemExpressions(parameterOrLiteralExpressions, macroConfiguration, usedMacros);
}
@Override
public Expression createInItemExpression(String parameterOrLiteralExpression) {
return expressionFactory.createInItemExpression(parameterOrLiteralExpression, getDefaultMacroConfiguration(), null);
}
@Override
public Expression createInItemExpression(String parameterOrLiteralExpression, MacroConfiguration macroConfiguration, Set usedMacros) {
return expressionFactory.createInItemExpression(parameterOrLiteralExpression, macroConfiguration, usedMacros);
}
@Override
public Expression createInItemOrPathExpression(String parameterOrLiteralExpression) {
return expressionFactory.createInItemOrPathExpression(parameterOrLiteralExpression, getDefaultMacroConfiguration(), null);
}
@Override
public Expression createInItemOrPathExpression(String parameterOrLiteralExpression, MacroConfiguration macroConfiguration, Set usedMacros) {
return expressionFactory.createInItemOrPathExpression(parameterOrLiteralExpression, macroConfiguration, usedMacros);
}
@Override
public Predicate createBooleanExpression(String expression, boolean allowQuantifiedPredicates) {
return expressionFactory.createBooleanExpression(expression, allowQuantifiedPredicates, getDefaultMacroConfiguration(), null);
}
@Override
public Predicate createBooleanExpression(String expression, boolean allowQuantifiedPredicates, MacroConfiguration macroConfiguration, Set usedMacros) {
return expressionFactory.createBooleanExpression(expression, allowQuantifiedPredicates, macroConfiguration, usedMacros);
}
/* WARNING: Be careful when changing the implementation of equals and hashCode. Extensions rely on the the logic for efficient caching. */
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o instanceof ExpressionFactory) {
ExpressionFactory that = (ExpressionFactory) o;
ExpressionFactory thatExpressionFactory = that.unwrap(expressionFactory.getClass());
if (thatExpressionFactory == null || !expressionFactory.equals(thatExpressionFactory)) {
return false;
}
return getDefaultMacroConfiguration() != null ? getDefaultMacroConfiguration().equals(that.getDefaultMacroConfiguration()) : that.getDefaultMacroConfiguration() == null;
}
return false;
}
@Override
public int hashCode() {
int result = expressionFactory != null ? expressionFactory.hashCode() : 0;
result = 31 * result + (getDefaultMacroConfiguration() != null ? getDefaultMacroConfiguration().hashCode() : 0);
return result;
}
}