1 files changed, 64 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-final/java/das/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/PagerImpl.java b/sca-java-1.x/tags/java-M1-final/java/das/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/PagerImpl.java
new file mode 100644
index 0000000000..32b17ef3e7
--- /dev/null
+++ b/sca-java-1.x/tags/java-M1-final/java/das/rdb/src/main/java/org/apache/tuscany/das/rdb/impl/PagerImpl.java
@@ -0,0 +1,64 @@
+/**
+ *
+ *  Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
+ *
+ *  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 org.apache.tuscany.das.rdb.impl;
+
+import org.apache.tuscany.das.rdb.Command;
+import org.apache.tuscany.das.rdb.Pager;
+
+import commonj.sdo.DataObject;
+
+public class PagerImpl implements Pager {
+
+	private final ReadCommandImpl command;
+	private final int size;
+	private int idx = 1;
+
+	public PagerImpl(Command command, int size) {
+		this.command = (ReadCommandImpl)command;
+		this.command.enablePaging();
+		this.size = size;
+	}
+
+	public DataObject next() {
+		int start = idx;
+		int end = idx + size;
+		idx += size;
+		command.setStartRow(start);
+		command.setEndRow(end);
+		return command.executeQuery();
+	}
+
+	public DataObject getPage(int page) {
+		int end = (page * size) + 1;
+		int start = end - size;
+		idx = end;
+		command.setStartRow(start);
+		command.setEndRow(end);
+		return command.executeQuery();
+	}
+	
+	public DataObject previous() {
+		int start = idx - (2 * size);
+		if ( start < 1 ) 
+			start = 1;
+		int end = start + size;
+		idx = end; 
+		command.setStartRow(start);
+		command.setEndRow(end);
+		return command.executeQuery();
+	}
+}