DTMFilter (HtmlUnit-XPath 4.3.0 API)

```
public interface DTMFilter
```
Simple filter for doing node tests. Note the semantics of this are somewhat different that the DOM's NodeFilter.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`SHOW_ALL` Show all `Nodes`.
`static int`	`SHOW_ATTRIBUTE` Show `Attr` nodes.
`static int`	`SHOW_BYFUNCTION` Special bit for filters implementing match patterns starting with a function.
`static int`	`SHOW_CDATA_SECTION` Show `CDATASection` nodes.
`static int`	`SHOW_COMMENT` Show `Comment` nodes.
`static int`	`SHOW_DOCUMENT` Show `Document` nodes.
`static int`	`SHOW_DOCUMENT_FRAGMENT` Show `DocumentFragment` nodes.
`static int`	`SHOW_DOCUMENT_TYPE` Show `DocumentType` nodes.
`static int`	`SHOW_ELEMENT` Show `Element` nodes.
`static int`	`SHOW_ENTITY` Show `Entity` nodes.
`static int`	`SHOW_ENTITY_REFERENCE` Show `EntityReference` nodes.
`static int`	`SHOW_NAMESPACE` This bit instructs the iterator to show namespace nodes, which are modeled by DTM but not by the DOM.
`static int`	`SHOW_NOTATION` Show `Notation` nodes.
`static int`	`SHOW_PROCESSING_INSTRUCTION` Show `ProcessingInstruction` nodes.
`static int`	`SHOW_TEXT` Show `Text` nodes.

- Field Detail
  - SHOW_ALL
```
static final int SHOW_ALL
```
    Show all Nodes.
    
    See Also:
    
    Constant Field Values
  - SHOW_ELEMENT
```
static final int SHOW_ELEMENT
```
    Show Element nodes.
    
    See Also:
    
    Constant Field Values
  - SHOW_ATTRIBUTE
```
static final int SHOW_ATTRIBUTE
```
    Show Attr nodes. This is meaningful only when creating an iterator or tree-walker with an attribute node as its root; in this case, it means that the attribute node will appear in the first position of the iteration or traversal. Since attributes are never children of other nodes, they do not appear when traversing over the main document tree.
    
    See Also:
    
    Constant Field Values
  - SHOW_TEXT
```
static final int SHOW_TEXT
```
    Show Text nodes.
    
    See Also:
    
    Constant Field Values
  - SHOW_CDATA_SECTION
```
static final int SHOW_CDATA_SECTION
```
    Show CDATASection nodes.
    
    See Also:
    
    Constant Field Values
  - SHOW_ENTITY_REFERENCE
```
static final int SHOW_ENTITY_REFERENCE
```
    Show EntityReference nodes. Note that if Entity References have been fully expanded while the tree was being constructed, these nodes will not appear and this mask has no effect.
    
    See Also:
    
    Constant Field Values
  - SHOW_ENTITY
```
static final int SHOW_ENTITY
```
    Show Entity nodes. This is meaningful only when creating an iterator or tree-walker with an Entity node as its root; in this case, it means that the Entity node will appear in the first position of the traversal. Since entities are not part of the document tree, they do not appear when traversing over the main document tree.
    
    See Also:
    
    Constant Field Values
  - SHOW_PROCESSING_INSTRUCTION
```
static final int SHOW_PROCESSING_INSTRUCTION
```
    Show ProcessingInstruction nodes.
    
    See Also:
    
    Constant Field Values
  - SHOW_COMMENT
```
static final int SHOW_COMMENT
```
    Show Comment nodes.
    
    See Also:
    
    Constant Field Values
  - SHOW_DOCUMENT
```
static final int SHOW_DOCUMENT
```
    Show Document nodes. (Of course, as with Attributes and such, this is meaningful only when the iteration root is the Document itself, since Document has no parent.)
    
    See Also:
    
    Constant Field Values
  - SHOW_DOCUMENT_TYPE
```
static final int SHOW_DOCUMENT_TYPE
```
    Show DocumentType nodes.
    
    See Also:
    
    Constant Field Values
  - SHOW_DOCUMENT_FRAGMENT
```
static final int SHOW_DOCUMENT_FRAGMENT
```
    Show DocumentFragment nodes. (Of course, as with Attributes and such, this is meaningful only when the iteration root is the Document itself, since DocumentFragment has no parent.)
    
    See Also:
    
    Constant Field Values
  - SHOW_NOTATION
```
static final int SHOW_NOTATION
```
    Show Notation nodes. This is meaningful only when creating an iterator or tree-walker with a Notation node as its root; in this case, it means that the Notation node will appear in the first position of the traversal. Since notations are not part of the document tree, they do not appear when traversing over the main document tree.
    
    See Also:
    
    Constant Field Values
  - SHOW_NAMESPACE
```
static final int SHOW_NAMESPACE
```
    This bit instructs the iterator to show namespace nodes, which are modeled by DTM but not by the DOM. Make sure this does not conflict with NodeFilter.
    %REVIEW% Might be safer to start from higher bits and work down, to leave room for the DOM to expand its set of constants... Or, possibly, to create a DTM-specific field for these additional bits.
    
    See Also:
    
    Constant Field Values
  - SHOW_BYFUNCTION
```
static final int SHOW_BYFUNCTION
```
    Special bit for filters implementing match patterns starting with a function. Make sure this does not conflict with NodeFilter.
    %REVIEW% Might be safer to start from higher bits and work down, to leave room for the DOM to expand its set of constants... Or, possibly, to create a DTM-specific field for these additional bits.
    
    See Also:
    
    Constant Field Values

Interface DTMFilter

Field Summary

Field Detail

SHOW_ALL

SHOW_ELEMENT

SHOW_ATTRIBUTE

SHOW_TEXT

SHOW_CDATA_SECTION

SHOW_ENTITY_REFERENCE

SHOW_ENTITY

SHOW_PROCESSING_INSTRUCTION

SHOW_COMMENT

SHOW_DOCUMENT

SHOW_DOCUMENT_TYPE

SHOW_DOCUMENT_FRAGMENT

SHOW_NOTATION

SHOW_NAMESPACE

SHOW_BYFUNCTION