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Diffstat (limited to 'tags/java/sca/1.0-incubator-M2/kernel/spi/src/main/java/org/apache/tuscany/spi/model/DataType.java')
| -rw-r--r-- | tags/java/sca/1.0-incubator-M2/kernel/spi/src/main/java/org/apache/tuscany/spi/model/DataType.java | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/tags/java/sca/1.0-incubator-M2/kernel/spi/src/main/java/org/apache/tuscany/spi/model/DataType.java b/tags/java/sca/1.0-incubator-M2/kernel/spi/src/main/java/org/apache/tuscany/spi/model/DataType.java deleted file mode 100644 index c98c113d95..0000000000 --- a/tags/java/sca/1.0-incubator-M2/kernel/spi/src/main/java/org/apache/tuscany/spi/model/DataType.java +++ /dev/null @@ -1,223 +0,0 @@ -/* - * 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.spi.model; - -import java.lang.reflect.Type; -import java.util.HashMap; -import java.util.Map; - -/** - * 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 - * semantially 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 $Rev$ $Date$ - */ -public class DataType<L> extends ModelObject { - private String dataBinding = Object.class.getName(); - - private final Type physical; - - private final L logical; - - private final Map<String, Object> metadata = new HashMap<String, Object>(); - - /** - * 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 DataType(Type physical, L logical) { - this.physical = physical; - this.logical = logical; - if (physical instanceof Class) { - this.dataBinding = ((Class) physical).getName(); - } - } - - public DataType(String dataBinding, Type physical, L logical) { - this.dataBinding = dataBinding; - this.physical = physical; - this.logical = logical; - } - - /** - * Returns the physical type used by the runtime. - * - * @return the physical type used by the runtime - */ - public Type getPhysical() { - return physical; - } - - /** - * Returns the logical identifier used by the assembly. The type of this value identifies the logical type system in - * use. Known values are: <ul> <li>a java.lang.reflect.Type identifies a Java type by name and ClassLoader; this - * includes Java Classes as they are specializations of Type</li> <li>a javax.xml.namespace.QName identifies an XML - * type by local name and namespace</li> </ul> - * - * @return the logical type name - */ - public L getLogical() { - return logical; - } - - /** - * Returns all metadata about this type. - * - * @return all metadata about this type - */ - public Map<String, ?> getMetadata() { - return metadata; - } - - /** - * Returns the specified metadata item or null if not present. - * - * @param name the name of the metadata item - * @return the value, or null if not present - */ - public Object getMetadata(String name) { - return metadata.get(name); - } - - /** - * Sets the specified metadata value. A null value undefines it. - * - * @param name the name of the metadata item - * @param value the value, or null to undefine - * @return the old value for the item, or null if not present - */ - public Object setMetadata(String name, Object value) { - if (value == null) { - return metadata.remove(name); - } else { - return metadata.put(name, value); - } - } - - public String getDataBinding() { - if (dataBinding == null) { - // databinding is not set at the DataType level, check the operation - Operation<?> operation = (Operation<?>) getMetadata(Operation.class.getName()); - if (operation != null) { - return operation.getDataBinding(); - } - } - return dataBinding; - } - - /** - * @param dataBinding the dataBinding to set - */ - public void setDataBinding(String dataBinding) { - this.dataBinding = dataBinding; - } - - public int hashCode() { - int result; - result = dataBinding != null ? dataBinding.hashCode() : 0; - result = 29 * result + (physical != null ? physical.hashCode() : 0); - result = 29 * result + (logical != null ? logical.hashCode() : 0); - // Commented the following line out since it causes infinite loop from Operation.hashCode() - // if the metadata map contains the Operation - // result = 29 * result + (metadata != null ? metadata.hashCode() : 0); - return result; - } - - public boolean equals(Object o){ - if (this == o) { - return true; - } - if (o == null || getClass() != o.getClass()) { - return false; - } - - final DataType dataType = (DataType) o; - - if (dataBinding != null ? !dataBinding.equals(dataType.dataBinding) : dataType.dataBinding != null) { - return false; - } - if (logical != null ? !logical.equals(dataType.logical) : dataType.logical != null) { - return false; - } - return !(physical != null ? !physical.equals(dataType.physical) : dataType.physical != null); - - } - -// @SuppressWarnings("unchecked") -// public boolean equals(Object o) { -// if (this == o) { -// return true; -// } -// if (o == null || getClass() != o.getClass()) { -// return false; -// } -// -// final DataType dataType = (DataType) o; -// -// if (logical instanceof Class && dataType.logical instanceof Class) { -// Class<?> logicalClass = (Class<?>) logical; -// Class<?> targetLogicalClass = (Class<?>) dataType.logical; -// if (!logicalClass.isAssignableFrom(targetLogicalClass)) { -// return false; -// } -// } else { -// if (logical != null ? !logical.equals(dataType.logical) : dataType.logical != null) { -// return false; -// } -// } -// if (physical instanceof Class && dataType.physical instanceof Class) { -// Class<?> physicalClass = (Class<?>) physical; -// Class<?> physicalTargetClass = (Class<?>) dataType.physical; -// if (dataBinding != null -// && dataType.dataBinding != null -// && dataBinding.equals(physicalClass.getName()) -// && dataType.dataBinding.equals(physicalTargetClass.getName())) { -// return physicalClass.isAssignableFrom(physicalTargetClass); -// } -// if (!physicalClass.isAssignableFrom(physicalTargetClass)) { -// return false; -// } -// return !(dataBinding != null ? !dataBinding.equals(dataType.dataBinding) : dataType.dataBinding != null); -// -// -// } -// -// if (dataBinding != null ? !dataBinding.equals(dataType.dataBinding) : dataType.dataBinding != null) { -// return false; -// } -// -// return !(physical != null ? !physical.equals(dataType.physical) : dataType.physical != null); -// } - - public String toString() { - StringBuffer sb = new StringBuffer(); - sb.append(physical).append(" ").append(dataBinding).append(" ").append(logical); - return sb.toString(); - } - -} |