From 8f27e65bddd7d4b8515ce620fb485fdd78fcdf89 Mon Sep 17 00:00:00 2001
From: Constantin Jucovschi <cj@ubuntu.localdomain>
Date: Fri, 24 Apr 2009 07:20:22 -0400
Subject: Initial commit

---
 java/org/odmg/DCollection.java | 86 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 java/org/odmg/DCollection.java

(limited to 'java/org/odmg/DCollection.java')

diff --git a/java/org/odmg/DCollection.java b/java/org/odmg/DCollection.java
new file mode 100644
index 0000000..37cb173
--- /dev/null
+++ b/java/org/odmg/DCollection.java
@@ -0,0 +1,86 @@
+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* Rasdaman community is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+*/
+package org.odmg;
+
+/**
+* The base interface for all ODMG collections.
+* The ODMG collections are based on JavaSoft’s collection interfaces.
+* All of the operations defined by the JavaSoft <code>Collection</code>
+* interface are supported by an ODMG implementation of <code>DCollection</code>;
+* the exception <code>UnsupportedOperationException</code> is not thrown when a
+* call is made to any of the <code>Collection</code> methods.
+* <p>
+* <code>DCollection</code> contains methods used to perform queries on the collection.
+* The OQL query predicate is given as a string with the syntax of the
+* <code>where</code> clause of OQL. The predefined OQL variable <code>this</code>
+* is used inside the predicate to denote the current element of the collection.
+* @author	David Jordan (as Java Editor of the Object Data Management Group)
+* @version ODMG 3.0
+*/
+// * @see com.sun.java.util.collections.UnsupportedOperationException
+
+public interface DCollection extends java.util.Collection
+{
+/**
+* Selects the single element of the collection for which the provided OQL query
+* predicate is true,
+* <BR><I> not yet available in RasDaMan. </BR></I>
+* @param	predicate	An OQL boolean query predicate.
+* @return The element that evaluates to true for the predicate. If no element
+* evaluates to true, null is returned.
+* @exception	QueryInvalidException	The query predicate is invalid.
+*/
+	public Object selectElement(String predicate) throws QueryInvalidException;
+
+/**
+* Access all of the elements of the collection that evaluate to true for the
+* provided query predicate,
+* <BR><I> not yet available in RasDaMan. </BR></I>
+* @param	predicate	An OQL boolean query predicate.
+* @return	An iterator used to iterate over the elements that evaluated true for the predicate.
+* @exception	QueryInvalidException	The query predicate is invalid.
+*/
+	public java.util.Iterator select(String predicate) throws QueryInvalidException;
+
+/**
+* Evaluate the boolean query predicate for each element of the collection and
+* return a new collection that contains each element that evaluated to true,
+* <BR><I> not yet available in RasDaMan. </BR></I>
+* @param	predicate	An OQL boolean query predicate.
+* @return	A new collection containing the elements that evaluated true for the predicate.
+* @exception	QueryInvalidException	The query predicate is invalid.
+*/
+	public DCollection query(String predicate) throws QueryInvalidException;
+
+/**
+* Determines whether there is an element of the collection that evaluates to true
+* for the predicate,
+* <BR><I> not yet available in RasDaMan. </BR></I>
+* @param	predicate	An OQL boolean query predicate.
+* @return	True if there is an element of the collection that evaluates to true
+* for the predicate, otherwise false.
+* @exception	QueryInvalidException	The query predicate is invalid.
+*/
+	public boolean existsElement(String predicate) throws QueryInvalidException;
+}
+
-- 
cgit