Merge pull request #417 from mziccard/bigquery

DatasetInfo, DatasetId, TableId and Acl models and tests

gcloud-java-bigquery/src/main/java/com/google/gcloud/bigquery/DatasetId.java

@@ -0,0 +1,93 @@
+/*
+ * Copyright 2015 Google Inc. All Rights Reserved.
+ *
+ * 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 com.google.gcloud.bigquery;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.api.services.bigquery.model.DatasetReference;
+
+import java.io.Serializable;
+import java.util.Objects;
+
+/**
+ * Google BigQuery Dataset identity.
+ */
+public class DatasetId implements Serializable {
+
+  private static final long serialVersionUID = -6186254820908152300L;
+
+  private final String project;
+  private final String dataset;
+
+  /**
+   * Returns project's user-defined id
+   */
+  public String project() {
+    return project;
+  }
+
+  /**
+   * Returns dataset's user-defined id.
+   */
+  public String dataset() {
+    return dataset;
+  }
+
+  private DatasetId(String project, String dataset) {
+    this.project = project;
+    this.dataset = dataset;
+  }
+
+  /**
+   * Creates a dataset identity given project's and dataset's user-defined ids.
+   */
+  public static DatasetId of(String project, String dataset) {
+    return new DatasetId(checkNotNull(project), checkNotNull(dataset));
+  }
+
+  /**
+   * Creates a dataset identity given only its user-defined id.
+   */
+  public static DatasetId of(String dataset) {
+    return new DatasetId(null, checkNotNull(dataset));
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    return obj instanceof DatasetId && Objects.equals(toPb(), ((DatasetId) obj).toPb());
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(project, dataset);
+  }
+
+  @Override
+  public String toString() {
+    return toPb().toString();
+  }
+
+  public DatasetReference toPb() {
+    return new DatasetReference().setProjectId(project).setDatasetId(dataset);
+  }
+
+  public static DatasetId fromPb(DatasetReference datasetRef) {
+    return new DatasetId(
+        datasetRef.getProjectId(),
+        datasetRef.getDatasetId());
+  }
+}