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Spring Data Implementation for Elasticsearch
/*
* Copyright 2019-2021 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.elasticsearch.core;
import static org.springframework.util.StringUtils.*;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import org.elasticsearch.cluster.metadata.AliasMetadata;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.annotation.AnnotatedElementUtils;
import org.springframework.dao.InvalidDataAccessApiUsageException;
import org.springframework.data.elasticsearch.UncategorizedElasticsearchException;
import org.springframework.data.elasticsearch.annotations.Mapping;
import org.springframework.data.elasticsearch.core.convert.ElasticsearchConverter;
import org.springframework.data.elasticsearch.core.document.Document;
import org.springframework.data.elasticsearch.core.index.AliasData;
import org.springframework.data.elasticsearch.core.index.MappingBuilder;
import org.springframework.data.elasticsearch.core.index.Settings;
import org.springframework.data.elasticsearch.core.mapping.ElasticsearchPersistentEntity;
import org.springframework.data.elasticsearch.core.mapping.IndexCoordinates;
import org.springframework.data.elasticsearch.core.query.AliasQuery;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* Base implementation of {@link IndexOperations} common to Transport and Rest based Implementations of IndexOperations.
*
* @author Peter-Josef Meisch
* @author Sascha Woo
* @since 4.0
*/
abstract class AbstractDefaultIndexOperations implements IndexOperations {
private static final Logger LOGGER = LoggerFactory.getLogger(AbstractDefaultIndexOperations.class);
protected final ElasticsearchConverter elasticsearchConverter;
protected final RequestFactory requestFactory;
@Nullable protected final Class boundClass;
@Nullable private final IndexCoordinates boundIndex;
public AbstractDefaultIndexOperations(ElasticsearchConverter elasticsearchConverter, Class boundClass) {
Assert.notNull(boundClass, "boundClass may not be null");
this.elasticsearchConverter = elasticsearchConverter;
requestFactory = new RequestFactory(elasticsearchConverter);
this.boundClass = boundClass;
this.boundIndex = null;
}
public AbstractDefaultIndexOperations(ElasticsearchConverter elasticsearchConverter, IndexCoordinates boundIndex) {
Assert.notNull(boundIndex, "boundIndex may not be null");
this.elasticsearchConverter = elasticsearchConverter;
requestFactory = new RequestFactory(elasticsearchConverter);
this.boundClass = null;
this.boundIndex = boundIndex;
}
protected Class checkForBoundClass() {
if (boundClass == null) {
throw new InvalidDataAccessApiUsageException("IndexOperations are not bound");
}
return boundClass;
}
// region IndexOperations
@Override
public boolean create() {
Settings settings = boundClass != null ? createSettings(boundClass) : new Settings();
return doCreate(getIndexCoordinates(), settings, null);
}
@Override
public Settings createSettings(Class clazz) {
Assert.notNull(clazz, "clazz must not be null");
ElasticsearchPersistentEntity persistentEntity = getRequiredPersistentEntity(clazz);
String settingPath = persistentEntity.settingPath();
return hasText(settingPath) //
? Settings.parse(ResourceUtil.readFileFromClasspath(settingPath)) //
: persistentEntity.getDefaultSettings();
}
@Override
public boolean createWithMapping() {
return doCreate(getIndexCoordinates(), createSettings(), createMapping());
}
@Override
public boolean create(Map settings) {
Assert.notNull(settings, "settings must not be null");
return doCreate(getIndexCoordinates(), settings, null);
}
@Override
public boolean create(Map settings, Document mapping) {
Assert.notNull(settings, "settings must not be null");
Assert.notNull(mapping, "mapping must not be null");
return doCreate(getIndexCoordinates(), settings, mapping);
}
protected abstract boolean doCreate(IndexCoordinates index, Map settings, @Nullable Document mapping);
@Override
public boolean delete() {
return doDelete(getIndexCoordinates());
}
protected abstract boolean doDelete(IndexCoordinates index);
@Override
public boolean exists() {
return doExists(getIndexCoordinates());
}
protected abstract boolean doExists(IndexCoordinates index);
@Override
public boolean putMapping(Document mapping) {
return doPutMapping(getIndexCoordinates(), mapping);
}
protected abstract boolean doPutMapping(IndexCoordinates index, Document mapping);
@Override
public Map getMapping() {
return doGetMapping(getIndexCoordinates());
}
abstract protected Map doGetMapping(IndexCoordinates index);
@Override
public Settings getSettings() {
return getSettings(false);
}
@Override
public Settings getSettings(boolean includeDefaults) {
return doGetSettings(getIndexCoordinates(), includeDefaults);
}
protected abstract Settings doGetSettings(IndexCoordinates index, boolean includeDefaults);
@Override
public void refresh() {
doRefresh(getIndexCoordinates());
}
protected abstract void doRefresh(IndexCoordinates indexCoordinates);
@Override
@Deprecated
public boolean addAlias(AliasQuery query) {
return doAddAlias(query, getIndexCoordinates());
}
@Deprecated
protected abstract boolean doAddAlias(AliasQuery query, IndexCoordinates index);
@Override
public List queryForAlias() {
return doQueryForAlias(getIndexCoordinates());
}
protected abstract List doQueryForAlias(IndexCoordinates index);
@Override
@Deprecated
public boolean removeAlias(AliasQuery query) {
return doRemoveAlias(query, getIndexCoordinates());
}
@Deprecated
protected abstract boolean doRemoveAlias(AliasQuery query, IndexCoordinates index);
@Override
public Map> getAliases(String... aliasNames) {
Assert.notEmpty(aliasNames, "aliasNames must not be empty");
return doGetAliases(aliasNames, null);
}
@Override
public Map> getAliasesForIndex(String... indexNames) {
Assert.notEmpty(indexNames, "indexNames must not be empty");
return doGetAliases(null, indexNames);
}
protected abstract Map> doGetAliases(@Nullable String[] aliasNames,
@Nullable String[] indexNames);
@Override
public Document createMapping() {
return createMapping(checkForBoundClass());
}
@Override
public Document createMapping(Class clazz) {
return buildMapping(clazz);
}
protected Document buildMapping(Class clazz) {
// load mapping specified in Mapping annotation if present
Mapping mappingAnnotation = AnnotatedElementUtils.findMergedAnnotation(clazz, Mapping.class);
if (mappingAnnotation != null) {
String mappingPath = mappingAnnotation.mappingPath();
if (hasText(mappingPath)) {
String mappings = ResourceUtil.readFileFromClasspath(mappingPath);
if (hasText(mappings)) {
return Document.parse(mappings);
}
} else {
LOGGER.info("mappingPath in @Mapping has to be defined. Building mappings using @Field");
}
}
// build mapping from field annotations
try {
String mapping = new MappingBuilder(elasticsearchConverter).buildPropertyMapping(clazz);
return Document.parse(mapping);
} catch (Exception e) {
throw new UncategorizedElasticsearchException("Failed to build mapping for " + clazz.getSimpleName(), e);
}
}
@Override
public Settings createSettings() {
return createSettings(checkForBoundClass());
}
// endregion
// region Helper functions
ElasticsearchPersistentEntity getRequiredPersistentEntity(Class clazz) {
return elasticsearchConverter.getMappingContext().getRequiredPersistentEntity(clazz);
}
@Override
public IndexCoordinates getIndexCoordinates() {
return (boundClass != null) ? getIndexCoordinatesFor(boundClass) : Objects.requireNonNull(boundIndex);
}
public IndexCoordinates getIndexCoordinatesFor(Class clazz) {
return getRequiredPersistentEntity(clazz).getIndexCoordinates();
}
// endregion
}