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MyBatis framework for generating dynamic SQL
/**
* Copyright 2016-2019 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
*
* 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 org.mybatis.dynamic.sql.where.condition;
import static org.mybatis.dynamic.sql.util.StringUtilities.spaceAfter;
import java.util.Collection;
import java.util.function.UnaryOperator;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.mybatis.dynamic.sql.AbstractListValueCondition;
public class IsIn extends AbstractListValueCondition {
protected IsIn(Collection values, UnaryOperator> valueStreamTransformer) {
super(values, valueStreamTransformer);
}
protected IsIn(Collection values) {
super(values);
}
@Override
public String renderCondition(String columnName, Stream placeholders) {
return spaceAfter(columnName)
+ placeholders.collect(Collectors.joining(",", "in (", ")")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
/**
* This method allows you to modify the condition's values before they are placed into the parameter map.
* For example, you could filter nulls, or trim strings, etc. This process will run before final rendering of SQL.
* If you filter values out of the stream, then final condition will not reference those values. If you filter all
* values out of the stream, then the condition will not render.
*
* @param valueStreamTransformer a UnaryOperator that will transform the value stream before
* the values are placed in the parameter map
* @return new condition with the specified transformer
*/
public IsIn then(UnaryOperator> valueStreamTransformer) {
return new IsIn<>(values, valueStreamTransformer);
}
public static IsIn of(Collection values) {
return new IsIn<>(values);
}
}