| /* |
| * Copyright (c) 1998, 2020 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.eis.adapters.xmlfile; |
| |
| import org.eclipse.persistence.eis.EISSequence; |
| import org.eclipse.persistence.eis.interactions.XQueryInteraction; |
| import org.eclipse.persistence.queries.DataModifyQuery; |
| import org.eclipse.persistence.queries.ValueReadQuery; |
| |
| /** |
| * Provides sequence support for EISPlatform |
| */ |
| public class XMLFileSequence extends EISSequence { |
| |
| /** |
| * Default constructor. |
| */ |
| public XMLFileSequence() { |
| super(); |
| } |
| |
| public XMLFileSequence(String name) { |
| super(name); |
| } |
| |
| public XMLFileSequence(String name, int size) { |
| super(name, size); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof XMLFileSequence) { |
| return equalNameAndSize(this, (XMLFileSequence)obj); |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public int hashCode() { |
| String n = getName(); |
| return 17 * (n != null ? n.hashCode() : 0) + getPreallocationSize() * 5; |
| } |
| |
| /** |
| * Support sequencing through sequence file. |
| */ |
| @Override |
| protected ValueReadQuery buildSelectQuery() { |
| ValueReadQuery query = new ValueReadQuery(); |
| query.addArgument("sequence-name"); |
| XQueryInteraction interaction = new XQueryInteraction(); |
| interaction.setFunctionName("select-sequence"); |
| interaction.setProperty("fileName", "sequence.xml"); |
| interaction.setXQueryString("sequence[sequence-name='#sequence-name']/sequence-count"); |
| query.setCall(interaction); |
| |
| return query; |
| } |
| |
| /** |
| * Support sequencing through sequence file. |
| */ |
| @Override |
| protected DataModifyQuery buildUpdateQuery() { |
| DataModifyQuery query = new DataModifyQuery(); |
| query.addArgument("sequence-name"); |
| query.addArgument("sequence-count"); |
| XQueryInteraction interaction = new XQueryInteraction(); |
| interaction.setFunctionName("update-sequence"); |
| interaction.setProperty("fileName", "sequence.xml"); |
| interaction.setXQueryString("sequence[sequence-name='#sequence-name']"); |
| interaction.setInputRootElementName("sequence"); |
| interaction.addArgument("sequence-name"); |
| interaction.addArgument("sequence-count"); |
| interaction.setOutputResultPath("result"); |
| query.setCall(interaction); |
| |
| return query; |
| } |
| } |