Bug 709391 - initial import of Android Sync code (Git tag: v0.1.2-fixes). a=java-only

mobile/android/base/httpclientandroidlib/protocol/BasicHttpContext.java

@@ -0,0 +1,90 @@
+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+
+package ch.boye.httpclientandroidlib.protocol;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Default implementation of {@link HttpContext}.
+ * <p>
+ * Please note methods of this class are not synchronized and therefore may
+ * be threading unsafe.
+ *
+ * @since 4.0
+ */
+public class BasicHttpContext implements HttpContext {
+
+    private final HttpContext parentContext;
+    private Map map = null;
+
+    public BasicHttpContext() {
+        this(null);
+    }
+
+    public BasicHttpContext(final HttpContext parentContext) {
+        super();
+        this.parentContext = parentContext;
+    }
+
+    public Object getAttribute(final String id) {
+        if (id == null) {
+            throw new IllegalArgumentException("Id may not be null");
+        }
+        Object obj = null;
+        if (this.map != null) {
+            obj = this.map.get(id);
+        }
+        if (obj == null && this.parentContext != null) {
+            obj = this.parentContext.getAttribute(id);
+        }
+        return obj;
+    }
+
+    public void setAttribute(final String id, final Object obj) {
+        if (id == null) {
+            throw new IllegalArgumentException("Id may not be null");
+        }
+        if (this.map == null) {
+            this.map = new HashMap();
+        }
+        this.map.put(id, obj);
+    }
+
+    public Object removeAttribute(final String id) {
+        if (id == null) {
+            throw new IllegalArgumentException("Id may not be null");
+        }
+        if (this.map != null) {
+            return this.map.remove(id);
+        } else {
+            return null;
+        }
+    }
+
+}