Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* Copyright 2017-2019 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
*
* 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.cloud.gcp.data.datastore.repository.query;
import java.lang.reflect.Method;
import org.springframework.cloud.gcp.data.datastore.core.DatastoreOperations;
import org.springframework.cloud.gcp.data.datastore.core.mapping.DatastoreMappingContext;
import org.springframework.data.projection.ProjectionFactory;
import org.springframework.data.repository.core.NamedQueries;
import org.springframework.data.repository.core.RepositoryMetadata;
import org.springframework.data.repository.query.QueryLookupStrategy;
import org.springframework.data.repository.query.QueryMethod;
import org.springframework.data.repository.query.QueryMethodEvaluationContextProvider;
import org.springframework.data.repository.query.RepositoryQuery;
import org.springframework.util.Assert;
/**
* Query lookup strategy for Query Methods for Cloud Datastore.
*
* @author Chengyuan Zhao
*
* @since 1.1
*/
public class DatastoreQueryLookupStrategy implements QueryLookupStrategy {
private final DatastoreOperations datastoreOperations;
private final DatastoreMappingContext datastoreMappingContext;
private QueryMethodEvaluationContextProvider evaluationContextProvider;
public DatastoreQueryLookupStrategy(DatastoreMappingContext datastoreMappingContext,
DatastoreOperations datastoreOperations,
QueryMethodEvaluationContextProvider evaluationContextProvider) {
Assert.notNull(datastoreMappingContext,
"A non-null DatastoreMappingContext is required.");
Assert.notNull(datastoreOperations,
"A non-null DatastoreOperations is required.");
Assert.notNull(evaluationContextProvider,
"A non-null EvaluationContextProvider is required.");
this.datastoreMappingContext = datastoreMappingContext;
this.evaluationContextProvider = evaluationContextProvider;
this.datastoreOperations = datastoreOperations;
}
@Override
public RepositoryQuery resolveQuery(Method method, RepositoryMetadata metadata,
ProjectionFactory projectionFactory, NamedQueries namedQueries) {
DatastoreQueryMethod queryMethod = createQueryMethod(method, metadata, projectionFactory);
Class entityType = getEntityType(queryMethod);
if (queryMethod.hasAnnotatedQuery()) {
String sql = queryMethod.getQueryAnnotation().value();
return createGqlDatastoreQuery(entityType, queryMethod, sql);
}
else if (namedQueries.hasQuery(queryMethod.getNamedQueryName())) {
String sql = namedQueries.getQuery(queryMethod.getNamedQueryName());
return createGqlDatastoreQuery(entityType, queryMethod, sql);
}
return new PartTreeDatastoreQuery<>(queryMethod, this.datastoreOperations,
this.datastoreMappingContext, entityType, projectionFactory);
}
GqlDatastoreQuery createGqlDatastoreQuery(Class entityType,
DatastoreQueryMethod queryMethod, String gql) {
return new GqlDatastoreQuery<>(entityType, queryMethod, this.datastoreOperations,
gql, this.evaluationContextProvider,
this.datastoreMappingContext);
}
Class getEntityType(QueryMethod queryMethod) {
return queryMethod.getResultProcessor().getReturnedType().getDomainType();
}
DatastoreQueryMethod createQueryMethod(Method method, RepositoryMetadata metadata,
ProjectionFactory factory) {
return new DatastoreQueryMethod(method, metadata, factory);
}
}