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## weka.core.xml
Class PropertyHandler

    java.lang.Object
      weka.core.xml.PropertyHandler

    public class PropertyHandler

extends java.lang.Object

This class stores information about properties to ignore or properties that are allowed for a certain class.

Version:
  $Revision: 1.1.2.3 $
Author:
  FracPete (fracpete at waikato dot ac dot nz)

Constructor Summary
`PropertyHandler()` initializes the handling

Method Summary
`void` | `addAllowed(java.lang.Class c, java.lang.String displayName)` adds the given property (display name) to the list of allowed properties for the specified class.
`void` | `addIgnored(java.lang.Class c, java.lang.String displayName)` adds the given class with the display name of a property to the ignore list.
`void` | `addIgnored(java.lang.String displayName)` adds the given display name of a property to the ignore list.
`java.util.Enumeration` | `allowed()` returns an enumeration of the classnames for which only certain properties (display names) are allowed
`java.util.Enumeration` | `ignored()` returns an enumeration of the stored display names and classes of properties to ignore. NOTE: String and Class Objects are mixed in this enumeration, depending whether it is a global property to ignore or just one for a certain class!
`boolean` | `isAllowed(java.lang.Class c, java.lang.String displayName)` returns whether the given property (display name) is allowed for the given class.
`boolean` | `isAllowed(java.lang.Object o, java.lang.String displayName)` returns whether the given property (display name) is allowed for the given object .
`boolean` | `isIgnored(java.lang.Class c, java.lang.String displayName)` checks whether the given display name of a certain class is an ignored property.
`boolean` | `isIgnored(java.lang.Object o, java.lang.String displayName)` checks whether the given display name of a given object is an ignored property.
`boolean` | `isIgnored(java.lang.String displayName)` checks whether the given display name is an ignored property
`boolean` | `removeAllowed(java.lang.Class c, java.lang.String displayName)` removes the given property (display name) for the specified class from the list of allowed properties.
`boolean` | `removeIgnored(java.lang.Class c, java.lang.String displayName)` removes the given display name from the ignore list of the class.
`boolean` | `removeIgnored(java.lang.String displayName)` removes the given display name from the ignore list.

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### PropertyHandler

    public PropertyHandler()

  initializes the handling

Method Detail

### ignored

    public java.util.Enumeration ignored()

  returns an enumeration of the stored display names and classes of properties to ignore.
  NOTE: String and Class Objects are mixed in this enumeration, depending whether it is a global property to ignore or just one for a certain class!

  Returns:
    the display names and classes
  See Also:
    `m_Ignored`

### addIgnored

    public void addIgnored(java.lang.String displayName)

  adds the given display name of a property to the ignore list. Can either be a complete path (e.g. `__root__.options`) or only a property name (e.g. `options`). In the latter case it matches all occurences of this display name.

  Parameters:
    `displayName` - the property to ignore
  See Also:
    `m_Ignored`

### addIgnored

    public void addIgnored(java.lang.Class c,
                           java.lang.String displayName)

  adds the given class with the display name of a property to the ignore list. I.e. this property is only ignored for this class.

  Parameters:
    `c` - the class for which a property is to be ignored
    `displayName` - the property to ignore
  See Also:
    `m_Ignored`

### removeIgnored

    public boolean removeIgnored(java.lang.String displayName)

  removes the given display name from the ignore list. returns whether the removing was succesful, i.e. whether the display name was in the list.

  Parameters:
    `displayName` - the property to remove from the ignore list
  Returns:
    whether the ignore list contained the specified property
  See Also:
    `m_Ignored`

### removeIgnored

    public boolean removeIgnored(java.lang.Class c,
                                 java.lang.String displayName)

  removes the given display name from the ignore list of the class. returns whether the removing was succesful, i.e. whether the display name was in the list.

  Parameters:
    `c` - the class to remove the property from
    `displayName` - the property to remove from the ignore list
  Returns:
    whether the ignore list contained the specified property
  See Also:
    `m_Ignored`

### isIgnored

    public boolean isIgnored(java.lang.String displayName)

  checks whether the given display name is an ignored property

  Parameters:
    `displayName` - the property to check whether it is on the ignore list
  Returns:
    whether the property is in the ignored list
  See Also:
    `m_Ignored`

### isIgnored

    public boolean isIgnored(java.lang.Class c,
                             java.lang.String displayName)

  checks whether the given display name of a certain class is an ignored property. It only checks for this certain class and no derivative classes. If you also want to check for derivative classes, use `isIgnored(Object,String)`.

  Parameters:
    `c` - the class to check the property for
    `displayName` - the property to check whether it is on the ignore list
  Returns:
    whether the property is in the ignored list
  See Also:
    `m_Ignored`, `isIgnored(Object, String)`

### isIgnored

    public boolean isIgnored(java.lang.Object o,
                             java.lang.String displayName)

  checks whether the given display name of a given object is an ignored property. The object is checked for each stored class whether it is an `instanceof`. If the class is not stored then it will default to `false`, since there are no restrictions for this class.

  Parameters:
    `o` - the object to check the property for
    `displayName` - the property to check whether it is on the ignore list
  Returns:
    whether the property is in the ignored list
  See Also:
    `m_Ignored`

### allowed

    public java.util.Enumeration allowed()

  returns an enumeration of the classnames for which only certain properties (display names) are allowed

  Returns:
    the classnames with restriction to properties

### addAllowed

    public void addAllowed(java.lang.Class c,
                           java.lang.String displayName)

  adds the given property (display name) to the list of allowed properties for the specified class.

  Parameters:
    `c` - the class to add a property for
    `displayName` - the property to allow for the class
  See Also:
    `m_Allowed`

### removeAllowed

    public boolean removeAllowed(java.lang.Class c,
                                 java.lang.String displayName)

  removes the given property (display name) for the specified class from the list of allowed properties.

  Parameters:
    `c` - the class to remove the property for
    `displayName` - the property to remove
  Returns:
    whether the property was found
  See Also:
    `m_Allowed`

### isAllowed

    public boolean isAllowed(java.lang.Class c,
                             java.lang.String displayName)

  returns whether the given property (display name) is allowed for the given class. It only checks for this certain class and no derivative classes. If you also want to check for derivative classes, use `isAllowed(Object,String)`.

  Parameters:
    `c` - the class to check the property for
    `displayName` - the property (display name) to check
  Returns:
    whether the property is allowed in that context
  See Also:
    `m_Allowed`, `isAllowed(Object, String)`

### isAllowed

    public boolean isAllowed(java.lang.Object o,
                             java.lang.String displayName)

  returns whether the given property (display name) is allowed for the given object . The object is checked for each stored class whether it is an `instanceof`. If the class is not stored then it will default to `true`, since there are no restrictions for this class.

  Parameters:
    `o` - the object to check the property for
    `displayName` - the property (display name) to check
  Returns:
    whether the property is allowed in that context

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