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## org.apache.lucene.queryparser.flexible.standard.nodes
Class RegexpQueryNode

    java.lang.Object
      org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl
          org.apache.lucene.queryparser.flexible.standard.nodes.RegexpQueryNode

All Implemented Interfaces:
  Cloneable, FieldableNode, QueryNode, TextableQueryNode

    public class RegexpQueryNode

extends QueryNodeImpl
implements TextableQueryNode, FieldableNode

A `RegexpQueryNode` represents `RegexpQuery` query Examples: /[a-z]|[0-9]/

Field Summary

Fields inherited from class org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl
`PLAINTEXT_FIELD_NAME, toQueryStringIgnoreFields`

Constructor Summary
`RegexpQueryNode(CharSequence field, CharSequence text, int begin, int end)`

Method Summary
`RegexpQueryNode` | `cloneTree()` Recursive clone the QueryNode tree The tags are not copied to the new tree when you call the cloneTree() method
`CharSequence` | `getField()` Returns the field associated to the node and every node under it.
`String` | `getFieldAsString()`
`CharSequence` | `getText()`
`void` | `setField(CharSequence field)` Associates the node to a field.
`void` | `setText(CharSequence text)`
`BytesRef` | `textToBytesRef()`
`CharSequence` | `toQueryString(EscapeQuerySyntax escapeSyntaxParser)` convert to a query string understood by the query parser
`String` | `toString()` Every implementation of this class should return pseudo xml like this: For FieldQueryNode: <field start='1' end='2' field='subject' text='foo'/>

Methods inherited from class org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl
`add, add, allocate, clone, containsTag, getChildren, getParent, getTag, getTagMap, isDefaultField, isLeaf, isRoot, set, setLeaf, setTag, unsetTag`

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

Methods inherited from interface org.apache.lucene.queryparser.flexible.core.nodes.QueryNode
`add, add, containsTag, getChildren, getParent, getTag, getTagMap, isLeaf, set, setTag, unsetTag`

Constructor Detail

### RegexpQueryNode

    public RegexpQueryNode(CharSequence field,
                           CharSequence text,
                           int begin,
                           int end)

Parameters:
  `field` - - field name
  `text` - - value that contains a regular expression
  `begin` - - position in the query string
  `end` - - position in the query string

Method Detail

### textToBytesRef

    public BytesRef textToBytesRef()

### toString

    public String toString()

  Description copied from class: `QueryNodeImpl`
  Every implementation of this class should return pseudo xml like this: For FieldQueryNode: <field start='1' end='2' field='subject' text='foo'/>

  Specified by:
    `toString` in interface `QueryNode`
  Overrides:
    `toString` in class `QueryNodeImpl`
  See Also:
    `QueryNode.toString()`

### cloneTree

    public RegexpQueryNode cloneTree()
                              throws CloneNotSupportedException

  Description copied from interface: `QueryNode`
  Recursive clone the QueryNode tree The tags are not copied to the new tree when you call the cloneTree() method

  Specified by:
    `cloneTree` in interface `QueryNode`
  Overrides:
    `cloneTree` in class `QueryNodeImpl`
  Returns:
    the cloned tree
  Throws:
    `CloneNotSupportedException`

### getText

    public CharSequence getText()

  Specified by:
    `getText` in interface `TextableQueryNode`

### setText

    public void setText(CharSequence text)

  Specified by:
    `setText` in interface `TextableQueryNode`

### getField

    public CharSequence getField()

  Description copied from interface: `FieldableNode`
  Returns the field associated to the node and every node under it.

  Specified by:
    `getField` in interface `FieldableNode`
  Returns:
    the field name

### getFieldAsString

    public String getFieldAsString()

### setField

    public void setField(CharSequence field)

  Description copied from interface: `FieldableNode`
  Associates the node to a field.

  Specified by:
    `setField` in interface `FieldableNode`
  Parameters:
    `field` - the field name

### toQueryString

    public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser)

  Description copied from interface: `QueryNode`
  convert to a query string understood by the query parser

  Specified by:
    `toQueryString` in interface `QueryNode`

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