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Add snippets for datastore.Query
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‎google-cloud-examples/src/main/java/com/google/cloud/examples/datastore/snippets/QuerySnippets.java‎

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/*
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* Copyright 2016 Google Inc. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* EDITING INSTRUCTIONS
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* This file is referenced in Query's javadoc. Any change to this file should be reflected in Query's
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* javadoc.
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*/
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package com.google.cloud.examples.datastore.snippets;
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import com.google.cloud.datastore.Datastore;
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import com.google.cloud.datastore.Entity;
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import com.google.cloud.datastore.Key;
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import com.google.cloud.datastore.ProjectionEntity;
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import com.google.cloud.datastore.Query;
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import com.google.cloud.datastore.QueryResults;
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import com.google.cloud.datastore.Transaction;
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/** This class contains a number of snippets for the {@link Transaction} interface. */
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public class QuerySnippets {
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private final Transaction transaction;
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public QuerySnippets(Transaction transaction) {
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this.transaction = transaction;
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}
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// [TARGET gqlQueryBuilder(String)]
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public QueryResults<?> newQuery() {
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Datastore datastore = transaction.datastore();
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// [START newQuery]
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Query<?> query = Query.gqlQueryBuilder("select * from kind").build();
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QueryResults<?> results = datastore.run(query);
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// Use results
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// [END newQuery]
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return results;
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}
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// [TARGET gqlQueryBuilder(Query.ResultType, String)]
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public QueryResults<Entity> newTypedQuery() {
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Datastore datastore = transaction.datastore();
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// [START newTypedQuery]
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Query<Entity> query = Query.gqlQueryBuilder(Query.ResultType.ENTITY, "select * from kind").build();
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QueryResults<Entity> results = datastore.run(query);
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// Use results
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// [END newTypedQuery]
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return results;
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}
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// [TARGET gqlQueryBuilder(Query.ResultType, String)]
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public QueryResults<Entity> newEntityQuery(String kind) {
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Datastore datastore = transaction.datastore();
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// [START newEntityQuery]
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Query<Entity> query = Query.entityQueryBuilder().kind(kind).build();
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QueryResults<Entity> results = datastore.run(query);
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// Use results
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// [END newEntityQuery]
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return results;
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}
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// [TARGET keyQueryBuilder(Query.ResultType, String)]
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public Query<Key> newKeyQuery(String kind) {
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Datastore datastore = transaction.datastore();
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// [START newKeyQuery]
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Query<Key> query = Query.keyQueryBuilder().kind(kind).build();
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QueryResults<Key> results = datastore.run(query);
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// Use results
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// [END newKeyQuery]
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return query;
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}
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// [TARGET projectionEntityQueryBuilder(Query.ResultType, String)]
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public Query<ProjectionEntity> newProjectionEntityQuery(String kind) {
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Datastore datastore = transaction.datastore();
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// [START newProjectionEntityQuery]
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Query<ProjectionEntity> query = Query.projectionEntityQueryBuilder().kind(kind).build();
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QueryResults<ProjectionEntity> results = datastore.run(query);
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// Use results
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// [END newProjectionEntityQuery]
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return query;
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}
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}

‎google-cloud-examples/src/test/java/com/google/cloud/examples/datastore/snippets/ITQuerySnippets.java‎

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/*
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* Copyright 2016 Google Inc. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.cloud.examples.datastore.snippets;
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import com.google.cloud.datastore.Datastore;
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import com.google.cloud.datastore.DatastoreOptions;
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import com.google.cloud.datastore.Entity;
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import com.google.cloud.datastore.Key;
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import com.google.cloud.datastore.QueryResults;
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import com.google.cloud.datastore.Transaction;
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import org.junit.BeforeClass;
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import org.junit.Test;
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public class ITQuerySnippets {
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private static Datastore datastore;
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@BeforeClass
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public static void beforeClass() {
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datastore = DatastoreOptions.defaultInstance().service();
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}
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@Test
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public void testNewQuery() {
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Transaction transaction = datastore.newTransaction();
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QuerySnippets transactionSnippets = new QuerySnippets(transaction);
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QueryResults<?> results = transactionSnippets.newQuery();
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}
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@Test
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public void testNewTypedQuery() {
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Transaction transaction = datastore.newTransaction();
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QuerySnippets transactionSnippets = new QuerySnippets(transaction);
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QueryResults<Entity> results = transactionSnippets.newTypedQuery();
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}
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@Test
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public void testNewEntityQuery() {
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Transaction transaction = datastore.newTransaction();
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QuerySnippets transactionSnippets = new QuerySnippets(transaction);
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QueryResults<Entity> results = transactionSnippets.newEntityQuery("*");
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}
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}

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