Rewrite exception handling

[yaz4j-moved-to-github.git] / src / main / java / org / yaz4j / ExceptionUtil.java

diff --git a/src/main/java/org/yaz4j/ExceptionUtil.java b/src/main/java/org/yaz4j/ExceptionUtil.java
new file mode 100644 (file)
index 0000000..8eb223b
--- /dev/null
+++ b/src/main/java/org/yaz4j/ExceptionUtil.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1995-2010, Index Data
+ * All rights reserved.
+ * See the file LICENSE for details.
+ */
+package org.yaz4j;
+
+import org.yaz4j.exception.*;
+import org.yaz4j.jni.SWIGTYPE_p_ZOOM_connection_p;
+import org.yaz4j.jni.yaz4jlib;
+import org.yaz4j.jni.yaz4jlibConstants;
+
+/**
+ * Utility class to map ZOOM errors into ZoomExceptions
+ * @author jakub
+ */
+class ExceptionUtil {
+
+  static ZoomException getError(SWIGTYPE_p_ZOOM_connection_p zoomConnection, String host, int port) {
+    int errorCode = yaz4jlib.ZOOM_connection_errcode(zoomConnection);
+    String message;
+    switch (errorCode) {
+      case yaz4jlibConstants.ZOOM_ERROR_NONE:
+        return null;
+      case yaz4jlib.ZOOM_ERROR_CONNECT:
+        message = String.format("Connection could not be made to %s:%d", host,
+        port);
+        return new ConnectionUnavailableException(message);
+      case yaz4jlib.ZOOM_ERROR_INVALID_QUERY:
+        message = String.format(
+        "The query requested is not valid or not supported");
+        return new InvalidQueryException(message);
+      case yaz4jlib.ZOOM_ERROR_INIT:
+        message = String.format("Server %s:%d rejected our init request", host,
+        port);
+        return new InitRejectedException(message);
+      case yaz4jlib.ZOOM_ERROR_TIMEOUT:
+        message = String.format("Server %s:%d timed out handling our request",
+        host, port);
+        return new ConnectionTimeoutException(message);
+      case yaz4jlib.ZOOM_ERROR_MEMORY:
+      case yaz4jlib.ZOOM_ERROR_ENCODE:
+      case yaz4jlib.ZOOM_ERROR_DECODE:
+      case yaz4jlib.ZOOM_ERROR_CONNECTION_LOST:
+      case yaz4jlib.ZOOM_ERROR_INTERNAL:
+      case yaz4jlib.ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
+      case yaz4jlib.ZOOM_ERROR_UNSUPPORTED_QUERY:
+        message = yaz4jlib.ZOOM_connection_errmsg(zoomConnection);
+        return new ZoomImplementationException("A fatal error occurred in Yaz: " +
+          errorCode + " - " + message);
+      default:
+        String errMsgBib1 = "Bib1Exception: Error Code = " + errorCode + " (" +
+          Bib1Diagnostic.getError(errorCode) + ")";
+        return new Bib1Exception(errMsgBib1);
+    }
+  }
+
+}
\ No newline at end of file