1 files changed, 103 insertions, 0 deletions
diff --git a/java/com/android/contacts/common/model/account/AccountTypeWithDataSet.java b/java/com/android/contacts/common/model/account/AccountTypeWithDataSet.java
new file mode 100644
index 000000000..a32ebe139
--- /dev/null
+++ b/java/com/android/contacts/common/model/account/AccountTypeWithDataSet.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * 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.android.contacts.common.model.account;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.provider.BaseColumns;
+import android.provider.ContactsContract;
+import android.provider.ContactsContract.RawContacts;
+import android.text.TextUtils;
+import java.util.Objects;
+
+/** Encapsulates an "account type" string and a "data set" string. */
+public class AccountTypeWithDataSet {
+
+  private static final String[] ID_PROJECTION = new String[] {BaseColumns._ID};
+  private static final Uri RAW_CONTACTS_URI_LIMIT_1 =
+      RawContacts.CONTENT_URI
+          .buildUpon()
+          .appendQueryParameter(ContactsContract.LIMIT_PARAM_KEY, "1")
+          .build();
+
+  /** account type. Can be null for fallback type. */
+  public final String accountType;
+
+  /** dataSet may be null, but never be "". */
+  public final String dataSet;
+
+  private AccountTypeWithDataSet(String accountType, String dataSet) {
+    this.accountType = TextUtils.isEmpty(accountType) ? null : accountType;
+    this.dataSet = TextUtils.isEmpty(dataSet) ? null : dataSet;
+  }
+
+  public static AccountTypeWithDataSet get(String accountType, String dataSet) {
+    return new AccountTypeWithDataSet(accountType, dataSet);
+  }
+
+  /**
+   * Return true if there are any contacts in the database with this account type and data set.
+   * Touches DB. Don't use in the UI thread.
+   */
+  public boolean hasData(Context context) {
+    final String BASE_SELECTION = RawContacts.ACCOUNT_TYPE + " = ?";
+    final String selection;
+    final String[] args;
+    if (TextUtils.isEmpty(dataSet)) {
+      selection = BASE_SELECTION + " AND " + RawContacts.DATA_SET + " IS NULL";
+      args = new String[] {accountType};
+    } else {
+      selection = BASE_SELECTION + " AND " + RawContacts.DATA_SET + " = ?";
+      args = new String[] {accountType, dataSet};
+    }
+
+    final Cursor c =
+        context
+            .getContentResolver()
+            .query(RAW_CONTACTS_URI_LIMIT_1, ID_PROJECTION, selection, args, null);
+    if (c == null) {
+      return false;
+    }
+    try {
+      return c.moveToFirst();
+    } finally {
+      c.close();
+    }
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (!(o instanceof AccountTypeWithDataSet)) {
+      return false;
+    }
+
+    AccountTypeWithDataSet other = (AccountTypeWithDataSet) o;
+    return Objects.equals(accountType, other.accountType) && Objects.equals(dataSet, other.dataSet);
+  }
+
+  @Override
+  public int hashCode() {
+    return (accountType == null ? 0 : accountType.hashCode())
+        ^ (dataSet == null ? 0 : dataSet.hashCode());
+  }
+
+  @Override
+  public String toString() {
+    return "[" + accountType + "/" + dataSet + "]";
+  }
+}