我有一个现有的旧版Java应用程序，该应用程序旨在在Websphere 7.0环境中运行。我们正在从Websphere转向Glassfish。此代码的原始开发人员不在身边，并且按预期没有文档。
大多数转换很简单。但是，EJB 2.1代码有问题。 bean定义本身很好，但是有许多辅助代码与IBM Websphere库非常非常紧密地结合在一起，而且似乎不需要完全重写就可以转换。
一个例子：
/**
* MyBeanAdaptorBinding_ebb6f53f
*/
public class MyBeanAdaptorBinding_ebb6f53f implements com.ibm.ws.ejbpersistence.beanextensions.EJBAdapterBinding {
/**
* getExtractor
*/
public com.ibm.ws.ejbpersistence.dataaccess.EJBExtractor getExtractor() {
// extractor for mypackage.entity.websphere_deploy.ORACLE_V11_1.MyBeanExtractor_ebb6f53f
com.ibm.ws.ejbpersistence.dataaccess.AbstractEJBExtractor extractor = new mypackage.entity.websphere_deploy.ORACLE_V11_1.MyBeanExtractor_ebb6f53f();
extractor.setPrimaryKeyColumns(new int[] {1});
extractor.setDataColumns(new int[] {1,2});
return extractor;
}
/**
* getInjector
*/
public com.ibm.ws.ejbpersistence.beanextensions.EJBInjector getInjector() {
return new mypackage.entity.websphere_deploy.ORACLE_V11_1.MyBeanInjectorImpl_ebb6f53f();
}
/**
* getAdapter
*/
public com.ibm.websphere.ejbpersistence.EJBToRAAdapter getAdapter() {
return com.ibm.ws.rsadapter.cci.WSRelationalRAAdapter.createAdapter();
}
/**
* getMetadata
*/
public Object[] getMetadata() {
java.lang.String[] primarykey, subhomes, composedObjs, composedObjImpls;
com.ibm.ObjectQuery.metadata.OSQLExternalCatalogEntry[] cat;
com.ibm.ObjectQuery.metadata.OSQLExternalColumnDef[] fields;
cat = new com.ibm.ObjectQuery.metadata.OSQLExternalCatalogEntry[5];
//-------------------------------------Alias-------------------------------------
cat[0] = new com.ibm.ObjectQuery.metadata.OSQLExternalCatalogRDBAlias("My", "My1_Alias", "ORACLE", "MYSCHEMA.My", "My_My1_Table", 11, 0, 0);
//-----------------------------------Table Type-----------------------------------
fields = new com.ibm.ObjectQuery.metadata.OSQLExternalColumnDef[2];
fields[0] = new com.ibm.ObjectQuery.metadata.OSQLExternalColumnDef("MyID", new String(), com.ibm.ObjectQuery.engine.OSQLConstants.NOT_APPLICABLE, new String(), com.ibm.ObjectQuery.engine.OSQLConstants.NOT_APPLICABLE, true, com.ibm.ObjectQuery.engine.OSQLSymbols._CHARACTER, 250, com.ibm.ObjectQuery.engine.OSQLConstants.NO_TYPE, true, 0, -1, 0, false);
fields[1] = new com.ibm.ObjectQuery.metadata.OSQLExternalColumnDef("MyNM", new String(), com.ibm.ObjectQuery.engine.OSQLConstants.NOT_APPLICABLE, new String(), com.ibm.ObjectQuery.engine.OSQLConstants.NOT_APPLICABLE, true, com.ibm.ObjectQuery.engine.OSQLSymbols._CHARACTER, 250, com.ibm.ObjectQuery.engine.OSQLConstants.NO_TYPE, false, 0, -1, 0, false);
primarykey = new String[1];
primarykey[0] = "MyID";
cat[1] = new com.ibm.ObjectQuery.metadata.OSQLExternalCatalogType("My", "My1_Table", null, fields, primarykey);
//-----------------------------------Bean Type-----------------------------------
fields = new com.ibm.ObjectQuery.metadata.OSQLExternalColumnDef[2];
fields[0] = new com.ibm.ObjectQuery.metadata.OSQLExternalColumnDef("MyId", new String(), com.ibm.ObjectQuery.engine.OSQLConstants.NOT_APPLICABLE, new String(), com.ibm.ObjectQuery.engine.OSQLConstants.NOT_APPLICABLE, true, com.ibm.ObjectQuery.engine.OSQLSymbols._CHARACTER, 0, com.ibm.ObjectQuery.engine.OSQLConstants.NO_TYPE, false, 0, -1, 0, false);
fields[1] = new com.ibm.ObjectQuery.metadata.OSQLExternalColumnDef("MyNm", new String(), com.ibm.ObjectQuery.engine.OSQLConstants.NOT_APPLICABLE, new String(), com.ibm.ObjectQuery.engine.OSQLConstants.NOT_APPLICABLE, true, com.ibm.ObjectQuery.engine.OSQLSymbols._CHARACTER, 0, com.ibm.ObjectQuery.engine.OSQLConstants.NO_TYPE, false, 0, -1, 0, false);
primarykey = new String[1];
primarykey[0] = "MyId";
cat[2] = new com.ibm.ObjectQuery.metadata.OSQLExternalCatalogType("My", "My_BO", "mypackage.entity.MyBean", fields, primarykey);
//--------------------------------------View--------------------------------------
composedObjs = null;
composedObjImpls = null;
subhomes = null;
cat[3] = new com.ibm.ObjectQuery.metadata.OSQLExternalCatalogView("My", "My_My_BO", "My_My1_Alias", composedObjs, composedObjImpls,
"select t1.MyID,t1.MyNM from _this t1",
null, subhomes,
0, null);
cat[4] = new com.ibm.ObjectQuery.metadata.OSQLExternalSysApplOptions(14, false);
return cat;
}
/**
* createDataAccessSpecs
*/
public java.util.Collection createDataAccessSpecs() throws javax.resource.ResourceException {
<snipped long implementation of find/create/delete logic using com.ibm.ws.* classes>
}
/**
* getProperties
*/
public java.util.HashMap getProperties() {
properties.put("USING_DB_AUTO_OCC_COLLISION_DETECTION", Boolean.FALSE);
properties.put("NEED_REFRESH_AFTER_PERSISTENCE", Boolean.FALSE);
return properties;
}
/**
* MyBeanAdaptorBinding_ebb6f53f
*/
public MyBeanAdaptorBinding_ebb6f53f() {
properties = new java.util.HashMap();
properties.put("VERSION", "7.0.0.0");
}
private java.util.HashMap properties;
}
此代码（以及其余大部分代码）似乎是自动生成的：_ebb6f53f后缀，完全指定的类名等。与此同时，还有MyBeanCacheEntry_ebb6f53f，MyBeanExtractor_ebb6f53f，MyBeanFunctionSet_ebb6f53f，MyBeanInjector_ebb6f53f，MyBeanInjector_ebb6f53f，是接口）。每个bean的辅助类集都有一个不同的十六进制字符串后缀。
ejb-jar.xml文件的相关部分：
<entity id="My">
<ejb-name>My</ejb-name>
<local-home>mypackage.entity.MyLocalHome</local-home>
<local>mypackage.entity.MyLocal</local>
<ejb-class>mypackage.entity.MyBean</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.String</prim-key-class>
<reentrant>false</reentrant>
<cmp-version>2.x</cmp-version>
<abstract-schema-name>My</abstract-schema-name>
<cmp-field id="CMPAttribute_1133536288497">
<field-name>MyId</field-name>
</cmp-field>
<cmp-field id="CMPAttribute_1133536292665">
<field-name>MyNm</field-name>
</cmp-field>
<primkey-field>MyId</primkey-field>
</entity>
cmp字段ID取自Oracle Map.mapxmi文件。 ejb-jar.xml和Map.mapxmi似乎都没有绑定到Websphere，所以我不认为它们需要修改，但是如果它们 did 我也认为它们也是自动生成的。
这不是行家或蚂蚁项目；构建过程是直接通过Eclipse完成的，并且不会在构建过程中修改/自动生成代码；它只是编译JAR，然后打包WAR和EAR。
我对EJB或Websphere不太了解。在过去的几天里，我已经进行了很多搜索和阅读，但是无法令人满意地回答以下问题：