diff options
Diffstat (limited to 'qpid/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/ValueHandler.java')
| -rw-r--r-- | qpid/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/ValueHandler.java | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/qpid/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/ValueHandler.java b/qpid/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/ValueHandler.java new file mode 100644 index 0000000000..57351a91d7 --- /dev/null +++ b/qpid/java/amqp-1-0-common/src/main/java/org/apache/qpid/amqp_1_0/codec/ValueHandler.java @@ -0,0 +1,159 @@ +/*
+ *
+ * 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.qpid.amqp_1_0.codec;
+
+import org.apache.qpid.amqp_1_0.type.AmqpErrorException;
+import org.apache.qpid.amqp_1_0.type.transport.AmqpError;
+import org.apache.qpid.amqp_1_0.type.transport.ConnectionError;
+
+import java.nio.ByteBuffer;
+import java.nio.charset.Charset;
+
+public class ValueHandler implements DescribedTypeConstructorRegistry.Source
+{
+ private static final byte DESCRIBED_TYPE = (byte)0;
+
+ private final DescribedTypeConstructorRegistry _describedTypeConstructorRegistry;
+
+
+ private static final TypeConstructor[][] TYPE_CONSTRUCTORS =
+ {
+ {},
+ {},
+ {},
+ {},
+ { NullTypeConstructor.getInstance(), BooleanConstructor.getTrueInstance(),
+ BooleanConstructor.getFalseInstance(), ZeroUIntConstructor.getInstance(),
+ ZeroULongConstructor.getInstance(), ZeroListConstructor.getInstance() },
+ { UByteTypeConstructor.getInstance(), ByteTypeConstructor.getInstance(),
+ SmallUIntConstructor.getInstance(), SmallULongConstructor.getInstance(),
+ SmallIntConstructor.getInstance(), SmallLongConstructor.getInstance(),
+ BooleanConstructor.getByteInstance()},
+ { UShortTypeConstructor.getInstance(), ShortTypeConstructor.getInstance() },
+ { UIntTypeConstructor.getInstance(), IntTypeConstructor.getInstance(),
+ FloatTypeConstructor.getInstance(), CharTypeConstructor.getInstance(),
+ DecimalConstructor.getDecimal32Instance()},
+ { ULongTypeConstructor.getInstance(), LongTypeConstructor.getInstance(),
+ DoubleTypeConstructor.getInstance(), TimestampTypeConstructor.getInstance(),
+ DecimalConstructor.getDecimal64Instance()},
+ { null, null,
+ null, null,
+ DecimalConstructor.getDecimal128Instance(), null,
+ null, null,
+ UUIDTypeConstructor.getInstance() },
+ { BinaryTypeConstructor.getInstance(1),
+ StringTypeConstructor.getInstance(1, Charset.forName("UTF8")),
+ StringTypeConstructor.getInstance(1, Charset.forName("UTF16")),
+ SymbolTypeConstructor.getInstance(1) },
+ { BinaryTypeConstructor.getInstance(4),
+ StringTypeConstructor.getInstance(4, Charset.forName("UTF8")),
+ StringTypeConstructor.getInstance(4, Charset.forName("UTF16")),
+ SymbolTypeConstructor.getInstance(4) },
+ { CompoundTypeConstructor.getInstance(1, CompoundTypeConstructor.LIST_ASSEMBLER_FACTORY),
+ CompoundTypeConstructor.getInstance(1, CompoundTypeConstructor.MAP_ASSEMBLER_FACTORY) },
+ { CompoundTypeConstructor.getInstance(4, CompoundTypeConstructor.LIST_ASSEMBLER_FACTORY),
+ CompoundTypeConstructor.getInstance(4, CompoundTypeConstructor.MAP_ASSEMBLER_FACTORY) },
+ {
+ ArrayTypeConstructor.getOneByteSizeTypeConstructor()
+ },
+ {
+ ArrayTypeConstructor.getFourByteSizeTypeConstructor()
+ }
+ };
+
+
+ public ValueHandler(DescribedTypeConstructorRegistry registry)
+ {
+ _describedTypeConstructorRegistry = registry;
+ }
+
+ public Object parse(final ByteBuffer in) throws AmqpErrorException
+ {
+ TypeConstructor constructor = readConstructor(in);
+ return constructor.construct(in, this);
+ }
+
+
+ public TypeConstructor readConstructor(ByteBuffer in) throws AmqpErrorException
+ {
+ if(!in.hasRemaining())
+ {
+ throw new AmqpErrorException(AmqpError.DECODE_ERROR, "Insufficient data - expected type, no data remaining");
+ }
+ byte formatCode = in.get();
+
+ if(formatCode == DESCRIBED_TYPE)
+ {
+ Object descriptor = parse(in);
+ DescribedTypeConstructor describedTypeConstructor = _describedTypeConstructorRegistry.getConstructor(descriptor);
+ if(describedTypeConstructor==null)
+ {
+ describedTypeConstructor=new DefaultDescribedTypeConstructor(descriptor);
+ }
+ TypeConstructor typeConstructor = readConstructor(in);
+
+ return describedTypeConstructor.construct(typeConstructor);
+
+ }
+ else
+ {
+ int subCategory = (formatCode >> 4) & 0x0F;
+ int subtype = formatCode & 0x0F;
+
+ TypeConstructor tc;
+ try
+ {
+ tc = TYPE_CONSTRUCTORS[subCategory][subtype];
+ }
+ catch(IndexOutOfBoundsException e)
+ {
+ tc = null;
+ }
+
+ if(tc == null)
+ {
+ throw new AmqpErrorException(ConnectionError.FRAMING_ERROR,"Unknown type format-code 0x%02x", formatCode);
+ }
+
+ return tc;
+ }
+ }
+
+
+
+
+
+ @Override
+ public String toString()
+ {
+ return "ValueHandler{" +
+ ", _describedTypeConstructorRegistry=" + _describedTypeConstructorRegistry +
+ '}';
+ }
+
+
+ public DescribedTypeConstructorRegistry getDescribedTypeRegistry()
+ {
+ return _describedTypeConstructorRegistry;
+ }
+
+
+}
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