com.blazebit.persistence.criteria.impl.expression.AbstractExpression 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.expression;
import com.blazebit.persistence.criteria.BlazeExpression;
import com.blazebit.persistence.criteria.impl.BlazeCriteriaBuilderImpl;
import com.blazebit.persistence.criteria.impl.expression.function.CastFunction;
import javax.persistence.criteria.Expression;
import javax.persistence.criteria.Predicate;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
/**
* @author Christian Beikov
* @since 1.2.0
*/
public abstract class AbstractExpression extends AbstractSelection implements BlazeExpression {
private static final long serialVersionUID = 1L;
public AbstractExpression(BlazeCriteriaBuilderImpl criteriaBuilder, Class javaType) {
super(criteriaBuilder, javaType);
}
@Override
@SuppressWarnings({"unchecked"})
public BlazeExpression as(Class type) {
return type.equals(getJavaType()) ? (BlazeExpression) this : new CastFunction(criteriaBuilder, type, this);
}
@Override
public Predicate isNull() {
return criteriaBuilder.isNull(this);
}
@Override
public Predicate isNotNull() {
return criteriaBuilder.isNotNull(this);
}
@Override
public Predicate in(Object... values) {
List> valueList = new ArrayList<>(values.length);
for (Object value : values) {
if (value instanceof Expression) {
valueList.add((Expression) value);
} else if (value == null) {
valueList.add(criteriaBuilder.nullValue(getJavaType()));
} else {
valueList.add(criteriaBuilder.value((T) value));
}
}
return new InPredicate(criteriaBuilder, this, valueList);
}
@Override
@SuppressWarnings({"unchecked"})
public Predicate in(Expression... values) {
List> valueList = new ArrayList<>(values.length);
for (Expression value : values) {
valueList.add((Expression) value);
}
return new InPredicate(criteriaBuilder, this, valueList);
}
@Override
@SuppressWarnings({"unchecked"})
public Predicate in(Collection values) {
List> valueList = new ArrayList<>(values.size());
for (Object value : values) {
if (value instanceof Expression) {
valueList.add((Expression) value);
} else if (value == null) {
valueList.add(criteriaBuilder.nullValue(getJavaType()));
} else {
valueList.add((Expression) criteriaBuilder.value(value));
}
}
return new InPredicate(criteriaBuilder, this, valueList);
}
@Override
@SuppressWarnings("unchecked")
public Predicate in(Expression> values) {
if (values instanceof LiteralExpression) {
Collection collection = ((LiteralExpression>) values).getLiteral();
List> valueList = new ArrayList<>(collection.size());
for (Object value : collection) {
if (value instanceof Expression) {
valueList.add((Expression) value);
} else if (value == null) {
valueList.add(criteriaBuilder.nullLiteral(getJavaType()));
} else {
valueList.add((Expression) criteriaBuilder.literal(value));
}
}
return new InPredicate(criteriaBuilder, this, valueList);
}
List> valueList = new ArrayList<>(1);
valueList.add((Expression) values);
return new InPredicate(criteriaBuilder, this, valueList);
}
@SuppressWarnings({"unchecked"})
public BlazeExpression asLong() {
setJavaType(Long.class);
return (BlazeExpression) this;
}
@SuppressWarnings({"unchecked"})
public BlazeExpression asInteger() {
setJavaType(Integer.class);
return (BlazeExpression) this;
}
@SuppressWarnings({"unchecked"})
public BlazeExpression asFloat() {
setJavaType(Float.class);
return (BlazeExpression) this;
}
@SuppressWarnings({"unchecked"})
public BlazeExpression asDouble() {
setJavaType(Double.class);
return (BlazeExpression) this;
}
@SuppressWarnings({"unchecked"})
public BlazeExpression asBigDecimal() {
setJavaType(BigDecimal.class);
return (BlazeExpression) this;
}
@SuppressWarnings({"unchecked"})
public BlazeExpression asBigInteger() {
setJavaType(BigInteger.class);
return (BlazeExpression) this;
}
@SuppressWarnings({"unchecked"})
public BlazeExpression asString() {
setJavaType(String.class);
return (BlazeExpression) this;
}
}