1 files changed, 73 insertions, 0 deletions
diff --git a/src/com/google/wireless/gdata/client/HttpQueryParams.java b/src/com/google/wireless/gdata/client/HttpQueryParams.java
new file mode 100644
index 0000000..4878002
--- /dev/null
+++ b/src/com/google/wireless/gdata/client/HttpQueryParams.java
@@ -0,0 +1,73 @@
+// Copyright 2007 The Android Open Source Project
+
+package com.google.wireless.gdata.client;
+
+import java.util.Hashtable;
+import java.util.Vector;
+
+/**
+ * A concrete implementation of QueryParams that uses the encodeUri method of a
+ * GDataClient (passed in at construction time) to URL encode parameters.
+ *
+ * This implementation maintains the order of parameters, which is useful for
+ * testing.  Instances of this class are not thread safe.
+ */
+public class HttpQueryParams extends QueryParams {
+
+  private GDataClient client;
+
+  /* Used to store the mapping of names to values */
+  private Hashtable params;
+
+  /* Used to maintain the order of parameter additions */
+  private Vector names;
+
+  /**
+   * Constructs a new, empty HttpQueryParams.
+   *
+   * @param client GDataClient whose encodeUri method is used for URL encoding.
+   */
+  public HttpQueryParams(GDataClient client) {
+    this.client = client;
+    // We expect most queries to have a relatively small number of parameters.
+    names = new Vector(4);
+    params = new Hashtable(7);
+  }
+
+  public String generateQueryUrl(String feedUrl) {
+    StringBuffer url = new StringBuffer(feedUrl);
+    url.append(feedUrl.indexOf('?') >= 0 ? '&' : '?');
+
+    for (int i = 0; i < names.size(); i++) {
+      if (i > 0) {
+        url.append('&');
+      }
+      String name = (String) names.elementAt(i);
+      url.append(client.encodeUri(name)).append('=');
+      url.append(client.encodeUri(getParamValue(name)));
+    }
+    return url.toString();
+  }
+
+  public String getParamValue(String param) {
+    return (String) params.get(param);
+  }
+
+  public void setParamValue(String param, String value) {
+    if (value != null) {
+      if (!params.containsKey(param)) {
+        names.addElement(param);
+      }
+      params.put(param, value);
+    } else {
+      if (params.remove(param) != null) {
+        names.removeElement(param);
+      }
+    }
+  }
+
+  public void clear() {
+    names.removeAllElements();
+    params.clear();
+  }
+}