[EGIT PATCH v2 04/12] Add new class ExceptionCollector for grouping exceptions
Copied from org.eclipse.team.internal.core
Signed-off-by: Tor Arne Vestbø <torarnv@gmail.com>
---
org.spearce.egit.core/META-INF/MANIFEST.MF | 5 +-
.../core/internal/util/ExceptionCollector.java | 128 ++++++++++++++++++++
2 files changed, 131 insertions(+), 2 deletions(-)
create mode 100644 org.spearce.egit.core/src/org/spearce/egit/core/internal/util/ExceptionCollector.java
diff --git a/org.spearce.egit.core/META-INF/MANIFEST.MF b/org.spearce.egit.core/META-INF/MANIFEST.MF
index e13732b..20df15f 100644
--- a/org.spearce.egit.core/META-INF/MANIFEST.MF
+++ b/org.spearce.egit.core/META-INF/MANIFEST.MF
@@ -12,8 +12,9 @@ Require-Bundle: org.eclipse.core.runtime,
org.spearce.jgit,
org.eclipse.core.filesystem,
org.eclipse.ui
-Export-Package: org.spearce.egit.core.internal.storage;x-friends:="org.spearce.egit.ui",
- org.spearce.egit.core,
+Export-Package: org.spearce.egit.core,
+ org.spearce.egit.core.internal.storage;x-friends:="org.spearce.egit.ui",
+ org.spearce.egit.core.internal.util;x-friends:="org.spearce.egit.ui",
org.spearce.egit.core.op,
org.spearce.egit.core.project
Bundle-ActivationPolicy: lazy
diff --git a/org.spearce.egit.core/src/org/spearce/egit/core/internal/util/ExceptionCollector.java b/org.spearce.egit.core/src/org/spearce/egit/core/internal/util/ExceptionCollector.java
new file mode 100644
index 0000000..d99d651
--- /dev/null
+++ b/org.spearce.egit.core/src/org/spearce/egit/core/internal/util/ExceptionCollector.java
@@ -0,0 +1,128 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2006 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.spearce.egit.core.internal.util;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.ILog;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.MultiStatus;
+import org.eclipse.core.runtime.Status;
+
+/**
+ * Collects exceptions and can be configured to ignore duplicates exceptions.
+ * Exceptions can be logged and a MultiStatus containing all collected
+ * exceptions can be returned.
+ *
+ * @see org.eclipse.core.runtime.MultiStatus
+ * @see org.eclipse.core.runtime.IStatus
+ *
+ * @since 3.0
+ */
+public class ExceptionCollector {
+
+ private final List<IStatus> statuses = new ArrayList<IStatus>();
+
+ private final String message;
+
+ private final String pluginId;
+
+ private final int severity;
+
+ private final ILog log;
+
+ /**
+ * Creates a collector and initializes the parameters for the top-level
+ * exception that would be returned from <code>getStatus</code> is
+ * exceptions are collected.
+ *
+ * @param message
+ * a human-readable message, localized to the current locale
+ * @param pluginId
+ * the unique identifier of the relevant plug-in
+ * @param severity
+ * the severity; one of <code>OK</code>, <code>ERROR</code>,
+ * <code>INFO</code>, or <code>WARNING</code>
+ * @param log
+ * the log to output the exceptions to, or <code>null</code> if
+ * exceptions should not be logged.
+ */
+ public ExceptionCollector(String message, String pluginId, int severity,
+ ILog log) {
+ this.message = message;
+ this.pluginId = pluginId;
+ this.severity = severity;
+ this.log = log;
+ }
+
+ /**
+ * Clears the exceptions collected.
+ */
+ public void clear() {
+ statuses.clear();
+ }
+
+ /**
+ * Returns a status that represents the exceptions collected. If the
+ * collector is empty <code>IStatus.OK</code> is returned. Otherwise a
+ * MultiStatus containing all collected exceptions is returned.
+ *
+ * @return a multistatus containing the exceptions collected or IStatus.OK
+ * if the collector is empty.
+ */
+ public IStatus getStatus() {
+ if (statuses.isEmpty()) {
+ return Status.OK_STATUS;
+ } else {
+ final MultiStatus multiStatus = new MultiStatus(pluginId, severity,
+ message, null);
+ final Iterator it = statuses.iterator();
+ while (it.hasNext()) {
+ final IStatus status = (IStatus) it.next();
+ multiStatus.merge(status);
+ }
+ return multiStatus;
+ }
+ }
+
+ /**
+ * Add this exception to the collector. If a log was specified in the
+ * constructor then the exception will be output to the log. You can
+ * retreive exceptions using <code>getStatus</code>.
+ *
+ * @param exception
+ * the exception to collect
+ */
+ public void handleException(CoreException exception) {
+ if (log != null) {
+ log.log(new Status(severity, pluginId, 0, message, exception));
+ }
+
+ // Record each status individually to flatten the resulting multi-status
+ final IStatus exceptionStatus = exception.getStatus();
+
+ // Wrap the exception so the stack trace is not lost.
+ final IStatus status = new Status(exceptionStatus.getSeverity(),
+ exceptionStatus.getPlugin(), exceptionStatus.getCode(),
+ exceptionStatus.getMessage(), exception);
+
+ recordStatus(status);
+ for (IStatus childStatus : status.getChildren())
+ recordStatus(childStatus);
+ }
+
+ private void recordStatus(IStatus status) {
+ statuses.add(status);
+ }
+}
--
1.6.1.2.309.g2ea3
Tor Arne Vestbø <torarnv@gmail.com>