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Diffstat (limited to 'src/com/kenai/jbosh/StaticBody.java')
-rw-r--r-- | src/com/kenai/jbosh/StaticBody.java | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/com/kenai/jbosh/StaticBody.java b/src/com/kenai/jbosh/StaticBody.java new file mode 100644 index 0000000..fe225fb --- /dev/null +++ b/src/com/kenai/jbosh/StaticBody.java @@ -0,0 +1,133 @@ +/* + * Copyright 2009 Mike Cumings + * + * Licensed 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 com.kenai.jbosh; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.util.Collections; +import java.util.Map; + +/** + * Implementation of the {@code AbstractBody} class which allows for the + * definition of messages from pre-existing message content. Instances of + * this class are based on the underlying data and therefore cannot be + * modified. In order to obtain the wrapper element namespace and + * attribute information, the body content is partially parsed. + * <p/> + * This class does only minimal syntactic and semantic checking with respect + * to what the generated XML will look like. It is up to the developer to + * protect against the definition of malformed XML messages when building + * instances of this class. + * <p/> + * Instances of this class are immutable and thread-safe. + */ +final class StaticBody extends AbstractBody { + + /** + * Selected parser to be used to process raw XML messages. + */ + private static final BodyParser PARSER = + new BodyParserXmlPull(); + + /** + * Size of the internal buffer when copying from a stream. + */ + private static final int BUFFER_SIZE = 1024; + + /** + * Map of all attributes to their values. + */ + private final Map<BodyQName, String> attrs; + + /** + * This body message in raw XML form. + */ + private final String raw; + + /////////////////////////////////////////////////////////////////////////// + // Constructors: + + /** + * Prevent direct construction. + */ + private StaticBody( + final Map<BodyQName, String> attrMap, + final String rawXML) { + attrs = attrMap; + raw = rawXML; + } + + /** + * Creates an instance which is initialized by reading a body + * message from the provided stream. + * + * @param inStream stream to read message XML from + * @return body instance + * @throws BOSHException on parse error + */ + public static StaticBody fromStream( + final InputStream inStream) + throws BOSHException { + ByteArrayOutputStream byteOut = new ByteArrayOutputStream(); + try { + byte[] buffer = new byte[BUFFER_SIZE]; + int read; + do { + read = inStream.read(buffer); + if (read > 0) { + byteOut.write(buffer, 0, read); + } + } while (read >= 0); + } catch (IOException iox) { + throw(new BOSHException( + "Could not read body data", iox)); + } + return fromString(byteOut.toString()); + } + + /** + * Creates an instance which is initialized by reading a body + * message from the provided raw XML string. + * + * @param rawXML raw message XML in string form + * @return body instance + * @throws BOSHException on parse error + */ + public static StaticBody fromString( + final String rawXML) + throws BOSHException { + BodyParserResults results = PARSER.parse(rawXML); + return new StaticBody(results.getAttributes(), rawXML); + } + + + /** + * {@inheritDoc} + */ + public Map<BodyQName, String> getAttributes() { + return Collections.unmodifiableMap(attrs); + } + + /** + * {@inheritDoc} + */ + public String toXML() { + return raw; + } + +} |