com.sun.jdo.api.persistence.enhancer.meta

Class JDOMetaDataProperties

java.lang.Object

com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataProperties

public final class JDOMetaDataProperties
extends Object

This class parses properties containing meta data information about classes. The syntax of the properties is the following:

• the keys in the properties file are fully qualified classnames or fully qualified fieldnames
• a fields is separated by a classname with a hash mark ('#') (e.g. "test.Test#test1")
• all classnames are given in a natural form (e.g. "java.lang.Integer", "java.lang.Integer[][]", "int", "test.Test$Test1")
• property keys are classnames and fieldnames (e.g. "test.Test=...", "test.Test#field1=...")
  
• Classnames can have the following attributes:
  • jdo:{persistent|transactional}
  • super: <classname>
  • access: {public|protected|package|private}
• Fieldnames can have the following attributes:
  • type:<type>
  • access: {public|protected|package|private}
  • jdo:{persistent|transactional|transient}
  • annotation:{pk|dfg|mediated}
• the names of the attributes can be ommitted: you can say
  test.Test1#field1=jdo:persistent,type:java.lang.String,pk,...
  or
  test.Test1#field1=persistent,java.lang.String,pk,...
  or
  test.Test1#field1=jdo:persistent,java.lang.String,pk,...
  
• in order to find fields of a class, a line for the class has to be specified in the properties: To find the field test.Test1#field, the keys test.Test1 and test.Test1#Field have to be present.

This class is not thread safe.

Constructor Summary

Constructors

Constructor and Description
JDOMetaDataProperties(Properties props) Creates a new object with the given properties.

Method Summary

Modifier and Type	Method and Description
com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataProperties.JDOClass	getJDOClass(String classname) Get the information about the class with the given name.
com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataProperties.JDOField	getJDOField(String fieldname, String classname) Gets the information about the specified field.
String[]	getKnownClassNames() Gets all classnames in the properties.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JDOMetaDataProperties

public JDOMetaDataProperties(Properties props)

Creates a new object with the given properties.

Parameters:

props - The properties.

See Also:

properties

Method Detail

getJDOClass

public final com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataProperties.JDOClass getJDOClass(String classname)
                                                                                           throws JDOMetaDataUserException

Get the information about the class with the given name.

Parameters:

classname - The classname.

Returns:

The information about the class or null if no information is given.

Throws:

JDOMetaDataUserException - If something went wrong parsing the properties.

getJDOField

public final com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataProperties.JDOField getJDOField(String fieldname,
                                                                                                  String classname)
                                                                                           throws JDOMetaDataUserException

Gets the information about the specified field.

Parameters:

classname - The name of the class.

fieldname - The name of the field of the class.

Returns:

The information about the field or null if no information could be found.

Throws:

JDOMetaDataUserException - If something went wrong parsing the properties.

getKnownClassNames

public final String[] getKnownClassNames()

Gets all classnames in the properties.

Returns:

All classnames in the properties.