Java Doc for DescriptorRepository.java in  » Database-ORM » db-ojb » org » apache » ojb » broker » metadata » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.broker.metadata   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.ojb.broker.metadata.DescriptorBase       org.apache.ojb.broker.metadata.DescriptorRepository DescriptorRepository final public class DescriptorRepository extends DescriptorBase implements Serializable,XmlCapable,IsolationLevels(Code) The repository containing all object mapping and manipulation information of all used persistent objects. Note: Be careful when use references of this class or caching instances of this class, because instances could become invalid (see MetadataManager ). author:    Thomas Mahler author:    Leandro Rodrigo Saad Cruz version:    $Id: DescriptorRepository.java,v 1.50.2.9 2005/12/21 22:26:11 tomdz Exp $ Field Summary final static  long serialVersionUID      Constructor Summary public   DescriptorRepository()      Method Summary  void addExtent(String classname, ClassDescriptor cld)      Add a pair of extent/classdescriptor to the extentTable to gain speed while retrieval of extents. protected  void deregisterSuperClassMultipleJoinedTables(ClassDescriptor cld)      Internal used! Deregister sub-classes of specified class when mapping to multiple joined tables is used. protected  ClassDescriptor discoverDescriptor(String className)      Starts by looking to see if the className is already mapped specifically to the descritpor repository. If the className is not specifically mapped we look at the className's parent class for a mapping. We do this until the parent class is of the type java.lang.Object. protected  void finalize()      public  ClassDescriptor findFirstConcreteClass(ClassDescriptor cld)      Return the first found concrete class ClassDescriptor . This means a class which is not an interface or an abstract class. If given class descriptor is a concrete class, given class descriptor was returned. public  Collection getAllConcreteSubclassDescriptors(ClassDescriptor aCld)      Utility method to discover all concrete subclasses of a given super class. public  int getDefaultIsolationLevel()      Returns the defaultIsolationLevel. public  ClassDescriptor getDescriptorFor(String strClassName)      public  ClassDescriptor getDescriptorFor(Class c)      public  Map getDescriptorTable()      public synchronized  FieldDescriptor[] getFieldDescriptorsForMultiMappedTable(ClassDescriptor targetCld)      protected  String getIsolationLevelAsString()      public  Class[] getSubClassesMultipleJoinedTables(ClassDescriptor cld, boolean wholeTree)      Return sub-classes of the specified class using the "super"-Reference concept. Parameters:   cld - The ClassDescriptor of the class to search for sub-classes. Parameters:   wholeTree - If set true, the whole sub-class tree of the specifiedclass will be returned. public  Class getTopLevelClass(Class clazz)      Returns the top level (extent) class to which the given class belongs. This may be a (abstract) base-class, an interface or the given class itself if given class is not defined as an extent in other class descriptors. throws:   ClassNotPersistenceCapableException - if clazz is not persistence capable,i.e. public static  String getVersion()      public  boolean hasDescriptorFor(Class c)      Checks if repository contains given class. public  Iterator iterator()      Returns an iterator over all managed ClassDescriptor . public  void put(Class c, ClassDescriptor cld)      public  void put(String classname, ClassDescriptor cld)      protected  void registerSuperClassMultipleJoinedTables(ClassDescriptor cld)      Internal used! Register sub-classes of specified class when mapping class to multiple joined tables is used. public  void remove(String className)      public  void remove(Class clazz)       void removeExtent(String classname)      Remove a pair of extent/classdescriptor from the extentTable. public  void setClassDescriptor(ClassDescriptor cld)      public  void setDefaultIsolationLevel(int defaultIsolationLevel)      Sets the defaultIsolationLevel. public  String toString()      public  String toXML()      Field Detail serialVersionUID final static long serialVersionUID(Code) Constructor Detail DescriptorRepository public DescriptorRepository() throws PersistenceBrokerException(Code) Constructor declaration Method Detail addExtent void addExtent(String classname, ClassDescriptor cld)(Code) Add a pair of extent/classdescriptor to the extentTable to gain speed while retrieval of extents. Parameters:   classname - the name of the extent itself Parameters:   cld - the class descriptor, where it belongs to deregisterSuperClassMultipleJoinedTables protected void deregisterSuperClassMultipleJoinedTables(ClassDescriptor cld)(Code) Internal used! Deregister sub-classes of specified class when mapping to multiple joined tables is used. Normally this method is called when DescriptorRepository.remove(Class) a class. Parameters:   cld - The ClassDescriptor of the class to register. discoverDescriptor protected ClassDescriptor discoverDescriptor(String className)(Code) Starts by looking to see if the className is already mapped specifically to the descritpor repository. If the className is not specifically mapped we look at the className's parent class for a mapping. We do this until the parent class is of the type java.lang.Object. If no mapping was found, null is returned. Mappings successfuly discovered through inheritence are added to the internal table of class descriptors to improve performance on subsequent requests for those classes. author Scott T. Weaver Parameters:   className - name of class whose descriptor we need to find. ClassDescriptor for className or nullif no ClassDescriptor could be located. finalize protected void finalize() throws Throwable(Code) findFirstConcreteClass public ClassDescriptor findFirstConcreteClass(ClassDescriptor cld)(Code) Return the first found concrete class ClassDescriptor . This means a class which is not an interface or an abstract class. If given class descriptor is a concrete class, given class descriptor was returned. If no concrete class can be found null will be returned. getAllConcreteSubclassDescriptors public Collection getAllConcreteSubclassDescriptors(ClassDescriptor aCld)(Code) Utility method to discover all concrete subclasses of a given super class. This method was introduced in order to get Extent Aware Iterators. a Collection of ClassDescriptor objects getDefaultIsolationLevel public int getDefaultIsolationLevel()(Code) Returns the defaultIsolationLevel. int getDescriptorFor public ClassDescriptor getDescriptorFor(String strClassName) throws ClassNotPersistenceCapableException(Code) lookup a ClassDescriptor in the internal Hashtable Parameters:   strClassName - a fully qualified class name as it is returned by Class.getName(). getDescriptorFor public ClassDescriptor getDescriptorFor(Class c) throws ClassNotPersistenceCapableException(Code) lookup a ClassDescriptor in the internal Hashtable getDescriptorTable public Map getDescriptorTable()(Code) getFieldDescriptorsForMultiMappedTable public synchronized FieldDescriptor[] getFieldDescriptorsForMultiMappedTable(ClassDescriptor targetCld)(Code) all field descriptors for a class that belongs to a set of classes mappedto the same table, otherwise the select queries produced won't contain the necessaryinformation to materialize extents mapped to the same class. getIsolationLevelAsString protected String getIsolationLevelAsString()(Code) returns IsolationLevel literal as matching to the corresponding id the IsolationLevel literal getSubClassesMultipleJoinedTables public Class[] getSubClassesMultipleJoinedTables(ClassDescriptor cld, boolean wholeTree)(Code) Return sub-classes of the specified class using the "super"-Reference concept. Parameters:   cld - The ClassDescriptor of the class to search for sub-classes. Parameters:   wholeTree - If set true, the whole sub-class tree of the specifiedclass will be returned. If false only the direct sub-classes of the specified classwill be returned. An array of sub-classes for the specified class. getTopLevelClass public Class getTopLevelClass(Class clazz) throws ClassNotPersistenceCapableException(Code) Returns the top level (extent) class to which the given class belongs. This may be a (abstract) base-class, an interface or the given class itself if given class is not defined as an extent in other class descriptors. throws:   ClassNotPersistenceCapableException - if clazz is not persistence capable,i.e. if clazz is not defined in the DescriptorRepository. getVersion public static String getVersion()(Code) hasDescriptorFor public boolean hasDescriptorFor(Class c)(Code) Checks if repository contains given class. iterator public Iterator iterator()(Code) Returns an iterator over all managed ClassDescriptor . put public void put(Class c, ClassDescriptor cld)(Code) Add a ClassDescriptor to the internal Hashtable Set the Repository for ClassDescriptor put public void put(String classname, ClassDescriptor cld)(Code) Add a ClassDescriptor to the internal Hashtable Set the Repository for ClassDescriptor registerSuperClassMultipleJoinedTables protected void registerSuperClassMultipleJoinedTables(ClassDescriptor cld)(Code) Internal used! Register sub-classes of specified class when mapping class to multiple joined tables is used. Normally this method is called by the ClassDescriptor itself. Parameters:   cld - The ClassDescriptor of the class to register. remove public void remove(String className)(Code) remove public void remove(Class clazz)(Code) removeExtent void removeExtent(String classname)(Code) Remove a pair of extent/classdescriptor from the extentTable. Parameters:   classname - the name of the extent itself setClassDescriptor public void setClassDescriptor(ClassDescriptor cld)(Code) Convenience for DescriptorRepository.put(Class c,ClassDescriptor cld) setDefaultIsolationLevel public void setDefaultIsolationLevel(int defaultIsolationLevel)(Code) Sets the defaultIsolationLevel. Parameters:   defaultIsolationLevel - The defaultIsolationLevel to set toString public String toString()(Code) returns a string representation toXML public String toXML()(Code) Fields inherited from org.apache.ojb.broker.metadata.DescriptorBase final static long serialVersionUID(Code)(Java Doc) Methods inherited from org.apache.ojb.broker.metadata.DescriptorBase public void addAttribute(String attributeName, String attributeValue)(Code)(Java Doc) public String getAttribute(String attributeName, String defaultValue)(Code)(Java Doc) public String getAttribute(String attributeName)(Code)(Java Doc) public String[] getAttributeNames()(Code)(Java Doc) public Map getAttributes()(Code)(Java Doc) public String toString()(Code)(Java Doc) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)