/*
* Copyright 2016. 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.springframework.data.mongodb.core.index;
import org.bson.Document;
import lombok.AccessLevel;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import org.springframework.data.mongodb.core.query.CriteriaDefinition;
import com.mongodb.DBObject;
/**
* {@link IndexFilter} implementation for usage with plain {@link DBObject} as well as {@link CriteriaDefinition} filter
* expressions.
*
* @author Christoph Strobl
* @since 1.10
*/
@RequiredArgsConstructor(access = AccessLevel.PRIVATE)
public class PartialIndexFilter implements IndexFilter {
private final @NonNull Object filterExpression;
/**
* Create new {@link PartialIndexFilter} for given {@link DBObject filter expression}.
*
* @param where must not be {@literal null}.
* @return
*/
public static PartialIndexFilter of(Document where) {
return new PartialIndexFilter(where);
}
/**
* Create new {@link PartialIndexFilter} for given {@link CriteriaDefinition filter expression}.
*
* @param where must not be {@literal null}.
* @return
*/
public static PartialIndexFilter of(CriteriaDefinition where) {
return new PartialIndexFilter(where);
}
/*
* (non-Javadoc)
* @see org.springframework.data.mongodb.core.index.IndexFilter#getFilterObject()
*/
public Document getFilterObject() {
if (filterExpression instanceof Document) {
return (Document) filterExpression;
}
if (filterExpression instanceof CriteriaDefinition) {
return ((CriteriaDefinition) filterExpression).getCriteriaObject();
}
throw new IllegalArgumentException(
String.format("Unknown type %s used as filter expression.", filterExpression.getClass()));
}
}