org.apache.openejb.client.EJBMetaDataImpl Maven / Gradle / Ivy
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/**
* 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.openejb.client;
import javax.ejb.EJBHome;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
public class EJBMetaDataImpl implements javax.ejb.EJBMetaData, java.io.Externalizable {
private static final long serialVersionUID = -858340852654709679L;
public static final byte STATEFUL = (byte) 6;
public static final byte STATELESS = (byte) 7;
public static final byte BMP_ENTITY = (byte) 8;
public static final byte CMP_ENTITY = (byte) 9;
public static final byte SINGLETON = (byte) 10;
protected transient byte type;
protected transient String deploymentID;
protected transient int deploymentCode;
protected transient Class homeClass;
protected transient Class remoteClass;
protected final transient List businessClasses = new ArrayList();
protected transient Class mainInterface;
protected final transient Set asynchronousMethods = new HashSet();
protected final transient Properties properties = new Properties();
protected transient Class keyClass;
protected transient EJBHome ejbHomeProxy;
protected transient InterfaceType interfaceType;
// only used for business objects;
protected transient Object primaryKey;
private transient ProtocolMetaData metaData;
public EJBMetaDataImpl() {
}
public EJBMetaDataImpl(final Class homeInterface,
final Class remoteInterface,
final String typeOfBean,
final InterfaceType interfaceType,
final List businessInterfaces,
final Set asynchronousMethodSignatures) {
this.interfaceType = interfaceType;
if ("STATEFUL".equalsIgnoreCase(typeOfBean)) {
this.type = STATEFUL;
} else if ("STATELESS".equalsIgnoreCase(typeOfBean)) {
this.type = STATELESS;
} else if ("SINGLETON".equalsIgnoreCase(typeOfBean)) {
this.type = SINGLETON;
} else if ("BMP_ENTITY".equalsIgnoreCase(typeOfBean)) {
this.type = BMP_ENTITY;
} else if ("CMP_ENTITY".equalsIgnoreCase(typeOfBean)) {
this.type = CMP_ENTITY;
}
this.homeClass = homeInterface;
this.remoteClass = remoteInterface;
if (businessInterfaces != null) {
this.businessClasses.addAll(businessInterfaces);
}
if (asynchronousMethodSignatures != null) {
this.asynchronousMethods.addAll(asynchronousMethodSignatures);
}
}
public EJBMetaDataImpl(final Class homeInterface,
final Class remoteInterface,
final Class primaryKeyClass,
final String typeOfBean,
final InterfaceType interfaceType,
final List businessInterfaces,
final Set asynchronousMethodSignatures) {
this(homeInterface, remoteInterface, typeOfBean, interfaceType, businessInterfaces, asynchronousMethodSignatures);
if (type == CMP_ENTITY || type == BMP_ENTITY) {
this.keyClass = primaryKeyClass;
}
}
public EJBMetaDataImpl(final Class homeInterface,
final Class remoteInterface,
final Class primaryKeyClass,
final String typeOfBean,
final String deploymentID,
final InterfaceType interfaceType,
final List businessInterfaces,
final Set asynchronousMethodSignatures) {
this(homeInterface, remoteInterface, primaryKeyClass, typeOfBean, interfaceType, businessInterfaces, asynchronousMethodSignatures);
this.deploymentID = deploymentID;
}
public EJBMetaDataImpl(final Class homeInterface,
final Class remoteInterface,
final Class primaryKeyClass,
final String typeOfBean,
final String deploymentID,
final int deploymentCode,
final InterfaceType interfaceType,
final List businessInterfaces,
final Set asynchronousMethodSignatures) {
this(homeInterface, remoteInterface, primaryKeyClass, typeOfBean, deploymentID, interfaceType, businessInterfaces, asynchronousMethodSignatures);
this.deploymentCode = deploymentCode;
}
public void setMetaData(final ProtocolMetaData metaData) {
this.metaData = metaData;
}
@Override
public Class getPrimaryKeyClass() {
if (type != BMP_ENTITY && type != CMP_ENTITY) {
throw new java.lang.UnsupportedOperationException();
}
return keyClass;
}
@Override
public EJBHome getEJBHome() {
return ejbHomeProxy;
}
@Override
public Class getHomeInterfaceClass() {
return homeClass;
}
@Override
public boolean isStatelessSession() {
return type == STATELESS;
}
public boolean isStatefulSession() {
return type == STATEFUL;
}
public boolean isSingletonSession() {
return type == SINGLETON;
}
@Override
public Class getRemoteInterfaceClass() {
return remoteClass;
}
@Override
public boolean isSession() {
return (type == STATEFUL || type == STATELESS || type == SINGLETON);
}
public boolean isAsynchronousMethod(final Method method) {
if (asynchronousMethods.size() == 0) {
return false;
}
return asynchronousMethods.contains(generateMethodSignature(method));
}
public void addAsynchronousMethod(final Method method) {
asynchronousMethods.add(generateMethodSignature(method));
}
protected void setEJBHomeProxy(final EJBHomeProxy home) {
ejbHomeProxy = home;
}
public String getDeploymentID() {
return deploymentID;
}
public Class getHomeClass() {
return homeClass;
}
public List getBusinessClasses() {
return businessClasses;
}
public Class getMainInterface() {
return mainInterface;
}
public Properties getProperties() {
return properties;
}
public Object getPrimaryKey() {
return primaryKey;
}
public void setPrimaryKey(final Object primaryKey) {
this.primaryKey = primaryKey;
}
@Override
public void writeExternal(final ObjectOutput out) throws IOException {
// write out the version of the serialized data for future use
out.writeByte(3);
out.writeObject(homeClass);
out.writeObject(remoteClass);
out.writeObject(keyClass);
out.writeObject(ejbHomeProxy);
out.writeByte(type);
out.writeUTF(deploymentID);
out.writeShort((short) deploymentCode);
out.writeShort((short) businessClasses.size());
for (final Class clazz : businessClasses) {
out.writeObject(clazz);
}
if (businessClasses.size() > 0) {
out.writeObject(primaryKey);
}
out.writeObject(mainInterface);
out.writeByte(interfaceType.ordinal());
out.writeInt(asynchronousMethods.size());
for (final String asynchronousMethod : asynchronousMethods) {
out.writeObject(asynchronousMethod);
}
if (properties.size() == 0) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
final ByteArrayOutputStream tmp = new ByteArrayOutputStream();
properties.store(tmp, "");
tmp.close();
final byte[] bytes = tmp.toByteArray();
final int length = bytes.length;
out.writeInt(length);
out.write(bytes);
}
}
@Override
public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
final byte version = in.readByte(); // future use
homeClass = (Class) in.readObject();
remoteClass = (Class) in.readObject();
keyClass = (Class) in.readObject();
ejbHomeProxy = (EJBHome) in.readObject();
type = in.readByte();
deploymentID = in.readUTF();
deploymentCode = in.readShort();
for (int i = in.readShort(); i > 0; i--) {
businessClasses.add((Class) in.readObject());
}
if (businessClasses.size() > 0) {
primaryKey = in.readObject();
}
if (version > 2) {
mainInterface = (Class) in.readObject();
}
if (version > 1) {
final byte typeIndex = in.readByte();
interfaceType = InterfaceType.values()[typeIndex];
}
for (int i = in.readInt(); i > 0; i--) {
asynchronousMethods.add((String) in.readObject());
}
final boolean hasProperties = in.readBoolean();
if (hasProperties) {
final int bufferLength = in.readInt();
final byte[] buffer = new byte[bufferLength];
in.read(buffer);
final ByteArrayInputStream bais = new ByteArrayInputStream(buffer);
properties.load(bais);
}
}
public String toString() {
final StringBuilder sb = new StringBuilder(100);
switch (type) {
case STATEFUL:
sb.append("STATEFUL:");
break;
case STATELESS:
sb.append("STATELESS:");
break;
case SINGLETON:
sb.append("SINGLETON:");
break;
case CMP_ENTITY:
sb.append("CMP_ENTITY:");
break;
case BMP_ENTITY:
sb.append("BMP_ENTITY:");
break;
}
sb.append(deploymentID).append(":");
if (homeClass != null) {
sb.append(homeClass.getName());
} else if (businessClasses.size() != 0) {
for (final Class clazz : businessClasses) {
sb.append(clazz.getName()).append(',');
}
sb.deleteCharAt(sb.length() - 1);
if (type == STATEFUL) {
sb.append(":").append(primaryKey);
}
}
return sb.toString();
}
public void loadProperties(final Properties properties) {
for (final Map.Entry entry : properties.entrySet()) {
if (entry.getKey() instanceof String) {
final String key = (String) entry.getKey();
if (key.startsWith("openejb.client.")) {
this.properties.put(key, entry.getValue());
}
}
}
}
private String generateMethodSignature(final Method method) {
final StringBuilder buffer = new StringBuilder(method.getName());
for (final Class parameterType : method.getParameterTypes()) {
buffer.append(parameterType.getName());
}
return buffer.toString();
}
}
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