org.springframework.data.relational.core.mapping.DerivedSqlIdentifier Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of spring-data-relational Show documentation
Show all versions of spring-data-relational Show documentation
Spring Data Relational support
/*
* Copyright 2020-2023 the original author or 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 org.springframework.data.relational.core.mapping;
import java.util.Collections;
import java.util.Iterator;
import java.util.function.UnaryOperator;
import org.springframework.data.relational.core.sql.IdentifierProcessing;
import org.springframework.data.relational.core.sql.SqlIdentifier;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* {@link SqlIdentifier} that is derived from a property name or class name to infer the defaults provided by a
* {@link NamingStrategy}.
*
* @author Mark Paluch
* @author Kurt Niemi
* @since 2.0
*/
class DerivedSqlIdentifier implements SqlIdentifier {
private final String name;
private final boolean quoted;
DerivedSqlIdentifier(String name, boolean quoted) {
Assert.hasText(name, "A database object must have at least on name part.");
this.name = name;
this.quoted = quoted;
}
@Override
public Iterator iterator() {
return Collections. singleton(this).iterator();
}
@Override
public SqlIdentifier transform(UnaryOperator transformationFunction) {
Assert.notNull(transformationFunction, "Transformation function must not be null");
return new DerivedSqlIdentifier(transformationFunction.apply(name), quoted);
}
@Override
public String toSql(IdentifierProcessing processing) {
String normalized = processing.standardizeLetterCase(name);
return quoted ? processing.quote(normalized) : normalized;
}
@Override
@Deprecated(since="3.1", forRemoval = true)
public String getReference(IdentifierProcessing processing) {
return this.name;
}
@Override
public boolean equals(@Nullable Object o) {
if (this == o) {
return true;
}
if (o instanceof SqlIdentifier) {
return toString().equals(o.toString());
}
return false;
}
@Override
public int hashCode() {
return toString().hashCode();
}
@Override
public String toString() {
return quoted ? toSql(IdentifierProcessing.ANSI) : this.name;
}
}