diff options
Diffstat (limited to 'plugins/org.eclipse.emf.cdo.net4j/src/org/eclipse/emf/internal/cdo/net4j/protocol/QueryRequest.java')
-rw-r--r-- | plugins/org.eclipse.emf.cdo.net4j/src/org/eclipse/emf/internal/cdo/net4j/protocol/QueryRequest.java | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/plugins/org.eclipse.emf.cdo.net4j/src/org/eclipse/emf/internal/cdo/net4j/protocol/QueryRequest.java b/plugins/org.eclipse.emf.cdo.net4j/src/org/eclipse/emf/internal/cdo/net4j/protocol/QueryRequest.java new file mode 100644 index 0000000000..0511343d21 --- /dev/null +++ b/plugins/org.eclipse.emf.cdo.net4j/src/org/eclipse/emf/internal/cdo/net4j/protocol/QueryRequest.java @@ -0,0 +1,96 @@ +/*************************************************************************** + * Copyright (c) 2004 - 2009 Eike Stepper (Berlin, Germany) and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * Simon McDuff - initial API and implementation + * Eike Stepper - maintenance + **************************************************************************/ +package org.eclipse.emf.internal.cdo.net4j.protocol; + +import org.eclipse.emf.cdo.common.io.CDODataInput; +import org.eclipse.emf.cdo.common.io.CDODataOutput; +import org.eclipse.emf.cdo.common.protocol.CDOProtocolConstants; +import org.eclipse.emf.cdo.common.util.CDOQueryQueue; +import org.eclipse.emf.cdo.internal.common.CDOQueryInfoImpl; + +import org.eclipse.emf.internal.cdo.net4j.bundle.OM; + +import org.eclipse.net4j.util.om.trace.ContextTracer; + +import org.eclipse.emf.spi.cdo.AbstractQueryIterator; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; + +/** + * @author Simon McDuff + */ +public class QueryRequest extends CDOClientRequest<List<Object>> +{ + private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_PROTOCOL, QueryRequest.class); + + private int viewID; + + private AbstractQueryIterator<?> queryResult; + + public QueryRequest(CDOClientProtocol protocol, int viewID, AbstractQueryIterator<?> queryResult) + { + super(protocol, CDOProtocolConstants.SIGNAL_QUERY); + this.viewID = viewID; + this.queryResult = queryResult; + } + + @Override + protected void requesting(CDODataOutput out) throws IOException + { + out.writeInt(viewID); + // TODO Simon: Move I/O logic to CDODataInput/OutputStream?! + ((CDOQueryInfoImpl)queryResult.getQueryInfo()).write(out); + } + + @Override + protected List<Object> confirming(CDODataInput in) throws IOException + { + int queryID = in.readInt(); + queryResult.setQueryID(queryID); + + CDOQueryQueue<Object> resultQueue = queryResult.getQueue(); + List<Object> result = new ArrayList<Object>(); + + try + { + int numberOfObjectsReceived = 0; + while (in.readBoolean()) + { + // result + Object element = in.readCDORevisionOrPrimitive(); + resultQueue.add(element); + numberOfObjectsReceived++; + } + + if (TRACER.isEnabled()) + { + TRACER.format("Query executed [{0} elements received]", numberOfObjectsReceived); //$NON-NLS-1$ + } + } + catch (RuntimeException ex) + { + resultQueue.setException(ex); + } + catch (Throwable throwable) + { + resultQueue.setException(new RuntimeException(throwable.getMessage(), throwable)); + } + finally + { + resultQueue.close(); + } + + return result; + } +} |