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Posted to commits@jackrabbit.apache.org by th...@apache.org on 2011/06/08 11:19:21 UTC
svn commit: r1133296 -
/jackrabbit/sandbox/microkernel/src/main/java/org/apache/jackrabbit/mk/util/MicroKernelInputStream.java
Author: thomasm
Date: Wed Jun 8 09:19:21 2011
New Revision: 1133296
URL: http://svn.apache.org/viewvc?rev=1133296&view=rev
Log:
Data store helper class.
Added:
jackrabbit/sandbox/microkernel/src/main/java/org/apache/jackrabbit/mk/util/MicroKernelInputStream.java
Added: jackrabbit/sandbox/microkernel/src/main/java/org/apache/jackrabbit/mk/util/MicroKernelInputStream.java
URL: http://svn.apache.org/viewvc/jackrabbit/sandbox/microkernel/src/main/java/org/apache/jackrabbit/mk/util/MicroKernelInputStream.java?rev=1133296&view=auto
==============================================================================
--- jackrabbit/sandbox/microkernel/src/main/java/org/apache/jackrabbit/mk/util/MicroKernelInputStream.java (added)
+++ jackrabbit/sandbox/microkernel/src/main/java/org/apache/jackrabbit/mk/util/MicroKernelInputStream.java Wed Jun 8 09:19:21 2011
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.jackrabbit.mk.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import org.apache.jackrabbit.mk.api.MicroKernel;
+
+/**
+ * An input stream to simplify reading a blob from the micro kernel.
+ */
+public class MicroKernelInputStream extends InputStream {
+
+ private final MicroKernel mk;
+ private final String id;
+ private long pos;
+ private byte[] oneByteBuff;
+
+ MicroKernelInputStream(MicroKernel mk, String id) {
+ this.mk = mk;
+ this.id = id;
+ }
+
+ public int read(byte[] b, int off, int len) {
+ int l = mk.read(id, pos, b, off, len);
+ if (len < 0) {
+ return l;
+ }
+ pos += l;
+ return l;
+ }
+
+ public int read() throws IOException {
+ if (oneByteBuff == null) {
+ oneByteBuff = new byte[1];
+ }
+ int len = mk.read(id, pos, oneByteBuff, 0, 1);
+ if (len < 0) {
+ return len;
+ }
+ pos++;
+ return oneByteBuff[0] & 0xff;
+ }
+
+ public static byte[] readFully(MicroKernel mk, String id) {
+ int len = (int) mk.getLength(id);
+ byte[] buff = new byte[len];
+ MicroKernelInputStream in = new MicroKernelInputStream(mk, id);
+ int off = 0, remaining = len;
+ while (remaining > 0) {
+ int l = in.read(buff, off, remaining);
+ off += l;
+ remaining -= l;
+ }
+ return buff;
+ }
+
+}