From e5b7380c874745c989d1816b8f552504f038e1bc Mon Sep 17 00:00:00 2001 From: lresende Date: Thu, 26 Sep 2013 20:33:20 +0000 Subject: 2.0 branch for possible maintenance release git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1526672 13f79535-47bb-0310-9956-ffa450edef68 --- .../sca/interfacedef/impl/DataTypeImpl.java | 242 +++++++++++++++++++++ 1 file changed, 242 insertions(+) create mode 100644 sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/interfacedef/impl/DataTypeImpl.java (limited to 'sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/interfacedef/impl/DataTypeImpl.java') diff --git a/sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/interfacedef/impl/DataTypeImpl.java b/sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/interfacedef/impl/DataTypeImpl.java new file mode 100644 index 0000000000..8d84e0352e --- /dev/null +++ b/sca-java-2.x/branches/2.0/modules/assembly/src/main/java/org/apache/tuscany/sca/interfacedef/impl/DataTypeImpl.java @@ -0,0 +1,242 @@ +/* + * 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.tuscany.sca.interfacedef.impl; + +import java.lang.ref.WeakReference; +import java.lang.reflect.Type; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; + +import org.apache.tuscany.sca.interfacedef.DataType; + +/** + * Representation of the type of data associated with an operation. Data is + * represented in two forms: the physical form used by the runtime and a logical + * form used by the assembly. The physical form is a Java Type because the + * runtime is written in Java. This may be the same form used by the application + * but it may not; for example, an application that is performing stream + * processing may want a physical form such as an + * {@link java.io.InputStream InputStream} to semantically operate on application + * data such as a purchase order. The logical description is that used by the + * assembly model and is an identifier into some well-known type space; examples + * may be a Java type represented by its Class or an XML type represented by its + * QName. Every data type may also contain metadata describing the expected + * data; for example, it could specify a preferred data binding technology or + * the size of a typical instance. + * + * @version $Rev$ $Date$ + * @tuscany.spi.extension.asclient + */ +public class DataTypeImpl implements DataType { + private String dataBinding; + private WeakReference> physical; + private WeakReference genericType; + private L logical; + private Map, Object> metaDataMap; + + /** + * Construct a data type specifying the physical and logical types. + * + * @param physical the physical class used by the runtime + * @param logical the logical type + * @see #getLogical() + */ + public DataTypeImpl(Class physical, L logical) { + this(null, physical, physical, logical); + } + + /** + * @param dataBinding + * @param physical + * @param logical + */ + public DataTypeImpl(String dataBinding, Class physical, L logical) { + this(dataBinding, physical, physical, logical); + } + + /** + * @param dataBinding + * @param physical + * @param genericType + * @param logical + */ + public DataTypeImpl(String dataBinding, Class physical, Type genericType, L logical) { + super(); + this.dataBinding = dataBinding; + this.physical = new WeakReference>(physical); + this.genericType = new WeakReference(genericType); + this.logical = logical; + } + + /** + * Returns the physical type used by the runtime. + * + * @return the physical type used by the runtime + */ + public Class getPhysical() { + return physical.get(); + } + + /** + * @param physical the physical to set + */ + public void setPhysical(Class physical) { + this.physical = new WeakReference>(physical); + } + + /** + * Get the java generic type + * @return The java generic type + */ + public Type getGenericType() { + return genericType.get(); + } + + /** + * Set the java generic type + * @param genericType + */ + public void setGenericType(Type genericType) { + this.genericType = new WeakReference(genericType); + } + + /** + * Returns the logical identifier used by the assembly. The type of this + * value identifies the logical type system in use. Known values are: + *
    + *
  • a java.lang.reflect.Type identifies a Java type by name and + * ClassLoader; this includes Java Classes as they are specializations of + * Type
    • + *
  • a javax.xml.namespace.QName identifies an XML type by local name and + * namespace
    • + *
+ * + * @return the logical type name + */ + public L getLogical() { + return logical; + } + + /** + * @param logical the logical to set + */ + public void setLogical(L logical) { + this.logical = logical; + } + + public String getDataBinding() { + return dataBinding; + } + + /** + * @param dataBinding the dataBinding to set + */ + public void setDataBinding(String dataBinding) { + this.dataBinding = dataBinding; + } + + + @Override + public String toString() { + StringBuilder b = new StringBuilder( 256 ); + b.append( "DataType[" ); + b.append( "dataBinding=" + ((dataBinding==null) ? "null" : dataBinding) ); + b.append( ", genericType=" + ((genericType==null || genericType.get() == null) ? "null" : genericType) ); + b.append( ", physical=" + ((physical==null || physical.get() == null) ? "null" : physical) ); + b.append( ", logical=" + ((logical==null) ? "null" : logical) ); + b.append( ", metaData size=" + ((metaDataMap==null) ? "0" : metaDataMap.size()) ); + b.append( "]" ); + return b.toString(); + } + + @SuppressWarnings("unchecked") + @Override + public Object clone() throws CloneNotSupportedException { + DataTypeImpl copy = (DataTypeImpl)super.clone(); + + // + // When using a DataTypeImpl with java:array databinding, + // 'logical' will be another DataTypeImpl. Doing only + // a shallow copy means that resetting the databinding will + // have an unexpected side effect on the original. Though + // we could special case the java:array-databinding case, + // instead do it more generally when the logical is another + // DataType. + // + if (logical instanceof DataType) { + DataType logicalDT = (DataType)logical; + copy.logical = logicalDT.clone(); + } + return copy; + } + + @Override + public int hashCode() { + final int prime = 31; + int result = 1; + result = prime * result + ((dataBinding == null) ? 0 : dataBinding.hashCode()); + result = prime * result + ((genericType == null || genericType.get() == null) ? 0 : genericType.hashCode()); + result = prime * result + ((logical == null) ? 0 : logical.hashCode()); + result = prime * result + ((physical == null || physical.get() == null) ? 0 : physical.hashCode()); + return result; + } + + @Override + public boolean equals(Object obj) { + if (this == obj) + return true; + if (obj == null) + return false; + if (getClass() != obj.getClass()) + return false; + final DataTypeImpl other = (DataTypeImpl)obj; + if (dataBinding == null) { + if (other.dataBinding != null) + return false; + } else if (!dataBinding.equals(other.dataBinding)) + return false; + if (genericType == null || genericType.get() == null) { + if (other.genericType != null && other.genericType.get() != null) + return false; + } else if (!genericType.get().equals(other.genericType.get())) + return false; + if (logical == null) { + if (other.logical != null) + return false; + } else if (!logical.equals(other.logical)) + return false; + if (physical == null || physical.get() == null) { + if (other.physical != null && other.physical.get() != null) + return false; + } else if (!physical.get().equals(other.physical.get())) + return false; + return true; + } + + public T getMetaData(Class type) { + return metaDataMap == null ? null : type.cast(metaDataMap.get(type)); + } + + public void setMetaData(Class type, T metaData) { + if (metaDataMap == null) { + metaDataMap = new ConcurrentHashMap, Object>(); + } + metaDataMap.put(type, metaData); + } +} -- cgit v1.2.3