From 2006356de97eef6d8ce1f4e03ace9a42079be8d1 Mon Sep 17 00:00:00 2001
From: pdanner <pdanner@d688527b-c9ab-4aba-bd8d-4036d912da1d>
Date: Wed, 5 Sep 2007 10:50:49 +0000
Subject: MOA-SP/SS Release 1.4.1

git-svn-id: https://joinup.ec.europa.eu/svn/moa-idspss/tags/Build-SPSS-1_4_1@995 d688527b-c9ab-4aba-bd8d-4036d912da1d
---
 .../egovernment/moa/util/StreamEntityResolver.java | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 common/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java

(limited to 'common/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java')

diff --git a/common/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java b/common/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java
new file mode 100644
index 000000000..38c4e863c
--- /dev/null
+++ b/common/src/main/java/at/gv/egovernment/moa/util/StreamEntityResolver.java
@@ -0,0 +1,64 @@
+package at.gv.egovernment.moa.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Map;
+
+import org.xml.sax.EntityResolver;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+
+/**
+ * An <code>EntityResolver</code> that maps system IDs to 
+ * <code>InputStream</code>s.
+ * 
+ * @author Patrick Peck
+ * @version $Id$
+ */
+public class StreamEntityResolver implements EntityResolver {
+  
+  /** A mapping from Public ID or System ID to an <code>InputStream</code>
+   * containing the entity. */
+  private Map mappedEntities;
+  
+  /**
+   * Create a <code>StreamEntityResolver</code>.
+   * 
+   * @param mappedEntities A mapping from public or system IDs 
+   * (<code>String</code> objects) to <code>InputStream</code>s. 
+   */
+  public StreamEntityResolver(Map mappedEntities) {
+    this.mappedEntities = mappedEntities;
+  }
+
+  /**
+   * Resolve an entity by looking it up in the mapped entities.
+   * 
+   * First, the public ID is looked up in the mapping, then the system ID.
+   * 
+   * @param publicId The public ID of the entity.
+   * @param systemId The system ID of the entity.
+   * @return An <code>InputStream</code> containing the entity or 
+   * <code>null</code> if no entity could be found. 
+   * @throws SAXException Signalling a parsing exception.
+   * @throws IOException Error reading the entity.
+   */
+  public InputSource resolveEntity(String publicId, String systemId) 
+    throws SAXException, IOException {
+      
+    InputSource src = null;
+      
+    if (publicId != null && mappedEntities.get(publicId) != null) {
+      src = new InputSource((InputStream) mappedEntities.get(publicId));
+    } else if (systemId != null && mappedEntities.get(systemId) != null) {
+      src = new InputSource((InputStream) mappedEntities.get(systemId));
+    }
+    
+    if (src != null) {
+      src.setPublicId(publicId);
+      src.setSystemId(systemId);
+    }
+    
+    return src;
+  }
+}
-- 
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