org.springframework.data.mongodb.core.index.IndexResolver Maven / Gradle / Ivy
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/*
* Copyright 2014-2022 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.mongodb.core.index;
import org.springframework.data.mapping.context.MappingContext;
import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
import org.springframework.data.util.ClassTypeInformation;
import org.springframework.data.util.TypeInformation;
import org.springframework.util.Assert;
/**
* {@link IndexResolver} finds those {@link IndexDefinition}s to be created for a given class.
*
* The {@link IndexResolver} considers index annotations like {@link Indexed}, {@link GeoSpatialIndexed},
* {@link HashIndexed}, {@link TextIndexed} and {@link WildcardIndexed} on properties as well as {@link CompoundIndex}
* and {@link WildcardIndexed} on types.
*
* Unless specified otherwise the index name will be created out of the keys/path involved in the index.
* {@link TextIndexed} properties are collected into a single index that covers the detected fields.
* {@link java.util.Map} like structures, unless annotated with {@link WildcardIndexed}, are skipped because the
* {@link java.util.Map.Entry#getKey() map key}, which cannot be resolved from static metadata, needs to be part of the
* index.
*
* @author Christoph Strobl
* @author Thomas Darimont
* @author Mark Paluch
* @since 1.5
*/
public interface IndexResolver {
/**
* Creates a new {@link IndexResolver} given {@link MongoMappingContext}.
*
* @param mappingContext must not be {@literal null}.
* @return the new {@link IndexResolver}.
* @since 2.2
*/
static IndexResolver create(
MappingContext, MongoPersistentProperty> mappingContext) {
Assert.notNull(mappingContext, "MongoMappingContext must not be null!");
return new MongoPersistentEntityIndexResolver(mappingContext);
}
/**
* Find and create {@link IndexDefinition}s for properties of given {@link TypeInformation}. {@link IndexDefinition}s
* are created for properties and types with {@link Indexed}, {@link CompoundIndexes} or {@link GeoSpatialIndexed}.
*
* @param typeInformation must not be {@literal null}.
* @return Empty {@link Iterable} in case no {@link IndexDefinition} could be resolved for type.
*/
Iterable resolveIndexFor(TypeInformation typeInformation);
/**
* Find and create {@link IndexDefinition}s for properties of given {@link TypeInformation}. {@link IndexDefinition}s
* are created for properties and types with {@link Indexed}, {@link CompoundIndexes} or {@link GeoSpatialIndexed}.
*
* @param entityType must not be {@literal null}.
* @return Empty {@link Iterable} in case no {@link IndexDefinition} could be resolved for type.
* @see 2.2
*/
default Iterable resolveIndexFor(Class entityType) {
return resolveIndexFor(ClassTypeInformation.from(entityType));
}
}