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Data Repository Support for Micronaut
/*
* Copyright 2017-2021 original authors
*
* 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
*
* https://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 io.micronaut.data.model.jpa.criteria.impl;
import io.micronaut.core.annotation.Internal;
import io.micronaut.data.model.PersistentEntity;
import io.micronaut.data.model.jpa.criteria.IExpression;
import io.micronaut.data.model.jpa.criteria.PersistentEntityRoot;
/**
* The ID expression implementation.
*
* @param The entity type
* @param The ID type
* @author Denis Stepanov
* @since 3.3
*/
@Internal
public final class IdExpression implements IExpression, SelectionVisitable {
private final PersistentEntityRoot root;
public IdExpression(PersistentEntityRoot root) {
this.root = root;
}
public PersistentEntityRoot getRoot() {
return root;
}
@Override
public void accept(SelectionVisitor selectionVisitor) {
selectionVisitor.visit(this);
}
@Override
public boolean isBoolean() {
PersistentEntity persistentEntity = root.getPersistentEntity();
if (persistentEntity.hasCompositeIdentity()) {
return false;
}
return root.get(persistentEntity.getIdentity().getName()).isBoolean();
}
@Override
public boolean isNumeric() {
PersistentEntity persistentEntity = root.getPersistentEntity();
if (persistentEntity.hasCompositeIdentity()) {
return false;
}
return root.get(persistentEntity.getIdentity().getName()).isNumeric();
}
@Override
public boolean isComparable() {
PersistentEntity persistentEntity = root.getPersistentEntity();
if (persistentEntity.hasCompositeIdentity()) {
return false;
}
return root.get(persistentEntity.getIdentity().getName()).isComparable();
}
@Override
public Class extends T> getJavaType() {
PersistentEntity persistentEntity = root.getPersistentEntity();
if (persistentEntity.hasCompositeIdentity()) {
throw new IllegalStateException("IdClass is unknown!");
}
return (Class extends T>) root.get(persistentEntity.getIdentity().getName()).getJavaType();
}
@Override
public String toString() {
return "IdExpression{" +
"root=" + root +
'}';
}
}
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