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Spring Data Relational support
/*
* Copyright 2019-2023 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.sql;
import org.springframework.util.Assert;
/**
* Assign a {@link Expression} to a {@link Column}.
*
* Results in a rendered assignment: {@code = } (e.g. {@code col = 'foo'}.
*
* @author Mark Paluch
* @since 1.1
*/
public class AssignValue extends AbstractSegment implements Assignment {
private final Column column;
private final Expression value;
private AssignValue(Column column, Expression value) {
super(column, value);
this.column = column;
this.value = value;
}
/**
* Creates a {@link AssignValue value} assignment to a {@link Column} given an {@link Expression}.
*
* @param target target column, must not be {@literal null}.
* @param value assignment value, must not be {@literal null}.
* @return the {@link AssignValue}.
*/
public static AssignValue create(Column target, Expression value) {
Assert.notNull(target, "Target column must not be null!");
Assert.notNull(value, "Value must not be null!");
return new AssignValue(target, value);
}
/**
* @return the target {@link Column}.
*/
public Column getColumn() {
return column;
}
/**
* @return the value to assign.
*/
public Expression getValue() {
return value;
}
/*
* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return this.column + " = " + this.value;
}
}