/**
* Asynchronously queries a Couchbase view and returns the result. The result can be accessed
* row-wise via an iterator.
*
* @param view the view to run the query against.
* @param query the type of query to run against the view.
* @return a Future containing the results of the query.
*/
private HttpFuture<ViewResponse> asyncQueryAndReduce(final View view, final Query query) {
if (!view.hasReduce()) {
throw new RuntimeException("This view doesn't contain a reduce function");
}
String uri = view.getURI() + query.toString();
final CountDownLatch couchLatch = new CountDownLatch(1);
final HttpFuture<ViewResponse> crv = new HttpFuture<ViewResponse>(couchLatch, 60000);
final HttpRequest request = new BasicHttpRequest("GET", uri, HttpVersion.HTTP_1_1);
final HttpOperation op =
new ReducedOperationImpl(
request,
new ViewCallback() {
private ViewResponse vr = null;
@Override
public void receivedStatus(OperationStatus status) {
crv.set(vr, status);
}
@Override
public void complete() {
couchLatch.countDown();
}
@Override
public void gotData(ViewResponse response) {
vr = response;
}
});
crv.setOperation(op);
addOp(op);
return crv;
}
/**
* Asynchronously queries a Couchbase view and returns the result. The result can be accessed
* row-wise via an iterator. This type of query will return the view result but will not get the
* documents associated with each row of the query.
*
* @param view the view to run the query against.
* @param query the type of query to run against the view.
* @return a Future containing the results of the query.
*/
private HttpFuture<ViewResponse> asyncQueryAndExcludeDocs(View view, Query query) {
String uri = view.getURI() + query.toString();
final CountDownLatch couchLatch = new CountDownLatch(1);
final HttpFuture<ViewResponse> crv = new HttpFuture<ViewResponse>(couchLatch, 60000);
final HttpRequest request = new BasicHttpRequest("GET", uri, HttpVersion.HTTP_1_1);
final HttpOperation op =
new NoDocsOperationImpl(
request,
new ViewCallback() {
private ViewResponse vr = null;
@Override
public void receivedStatus(OperationStatus status) {
crv.set(vr, status);
}
@Override
public void complete() {
couchLatch.countDown();
}
@Override
public void gotData(ViewResponse response) {
vr = response;
}
});
crv.setOperation(op);
addOp(op);
return crv;
}
public HttpFuture<String> asyncHttpGet(String uri) {
final CountDownLatch couchLatch = new CountDownLatch(1);
final HttpFuture<String> crv =
new HttpFuture<String>(couchLatch, operationTimeout, executorService);
HttpRequest request = new BasicHttpRequest("GET", uri, HttpVersion.HTTP_1_1);
HttpOperationImpl op =
new TestOperationImpl(
request,
new TestCallback() {
private String json;
@Override
public void receivedStatus(OperationStatus status) {
crv.set(json, status);
}
@Override
public void complete() {
couchLatch.countDown();
}
@Override
public void getData(String response) {
json = response;
}
});
crv.setOperation(op);
addOp(op);
return crv;
}
public HttpFuture<String> asyncHttpPut(String uri, String document)
throws UnsupportedEncodingException {
final CountDownLatch couchLatch = new CountDownLatch(1);
final HttpFuture<String> crv =
new HttpFuture<String>(couchLatch, operationTimeout, executorService);
HttpRequest request = new BasicHttpEntityEnclosingRequest("PUT", uri, HttpVersion.HTTP_1_1);
request.setHeader(new BasicHeader("Content-Type", "application/json"));
StringEntity entity = new StringEntity(document);
((BasicHttpEntityEnclosingRequest) request).setEntity(entity);
HttpOperationImpl op =
new TestOperationPutImpl(
request,
new TestCallback() {
private String json;
@Override
public void receivedStatus(OperationStatus status) {
crv.set(json, status);
}
@Override
public void complete() {
couchLatch.countDown();
}
@Override
public void getData(String response) {
json = response;
}
});
crv.setOperation(op);
addOp(op);
return crv;
}
/**
* Gets access to a view contained in a design document from the cluster.
*
* <p>The purpose of a view is take the structured data stored within the Couchbase Server
* database as JSON documents, extract the fields and information, and to produce an index of the
* selected information.
*
* <p>The result is a view on the stored data. The view that is created during this process allows
* you to iterate, select and query the information in your database from the raw data objects
* that have been stored.
*
* @param designDocumentName the name of the design document.
* @param viewName the name of the view to get.
* @return a View object from the cluster.
* @throws InterruptedException if the operation is interrupted while in flight
* @throws ExecutionException if an error occurs during execution
*/
public HttpFuture<View> asyncGetView(String designDocumentName, final String viewName) {
designDocumentName = MODE_PREFIX + designDocumentName;
String bucket = ((CouchbaseConnectionFactory) connFactory).getBucketName();
String uri = "/" + bucket + "/_design/" + designDocumentName;
final CountDownLatch couchLatch = new CountDownLatch(1);
final HttpFuture<View> crv = new HttpFuture<View>(couchLatch, 60000);
final HttpRequest request = new BasicHttpRequest("GET", uri, HttpVersion.HTTP_1_1);
final HttpOperation op =
new ViewFetcherOperationImpl(
request,
bucket,
designDocumentName,
viewName,
new ViewFetcherOperation.ViewFetcherCallback() {
private View view = null;
@Override
public void receivedStatus(OperationStatus status) {
crv.set(view, status);
}
@Override
public void complete() {
couchLatch.countDown();
}
@Override
public void gotData(View v) {
view = v;
}
});
crv.setOperation(op);
addOp(op);
assert crv != null : "Problem retrieving view";
return crv;
}
