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## org.apache.cayenne.ejbql.parser
Interface Node

All Superinterfaces:
  EJBQLExpression

All Known Implementing Classes:
  EJBQLAbs, EJBQLAbstractSchemaName, EJBQLAdd, EJBQLAggregate, EJBQLAggregateColumn, EJBQLAll, EJBQLAnd, EJBQLAny, EJBQLAscending, EJBQLAverage, EJBQLBetween, EJBQLBooleanLiteral, EJBQLClassName, EJBQLConcat, EJBQLConstructor, EJBQLConstructorParameter, EJBQLConstructorParameters, EJBQLCount, EJBQLCurrentDate, EJBQLCurrentTime, EJBQLCurrentTimestamp, EJBQLDecimalLiteral, EJBQLDelete, EJBQLDescending, EJBQLDistinct, EJBQLDivide, EJBQLEquals, EJBQLEscapeCharacter, EJBQLExists, EJBQLFrom, EJBQLFromItem, EJBQLGreaterOrEqual, EJBQLGreaterThan, EJBQLGroupBy, EJBQLHaving, EJBQLIdentificationVariable, EJBQLIdentifier, EJBQLIn, EJBQLInnerFetchJoin, EJBQLInnerJoin, EJBQLIntegerLiteral, EJBQLIsEmpty, EJBQLIsNull, EJBQLJoin, EJBQLLength, EJBQLLessOrEqual, EJBQLLessThan, EJBQLLike, EJBQLLocate, EJBQLLower, EJBQLMax, EJBQLMemberOf, EJBQLMin, EJBQLMod, EJBQLMultiply, EJBQLNamedInputParameter, EJBQLNegative, EJBQLNot, EJBQLNotEquals, EJBQLOr, EJBQLOrderBy, EJBQLOrderByItem, EJBQLOuterFetchJoin, EJBQLOuterJoin, EJBQLPath, EJBQLPatternValue, EJBQLPositionalInputParameter, EJBQLSelect, EJBQLSelectClause, EJBQLSelectExpression, EJBQLSelectExpressions, EJBQLSize, EJBQLSqrt, EJBQLStringLiteral, EJBQLSubselect, EJBQLSubstring, EJBQLSubtract, EJBQLSum, EJBQLTok, EJBQLTrim, EJBQLTrimBoth, EJBQLTrimCharacter, EJBQLTrimLeading, EJBQLTrimSpecification, EJBQLTrimTrailing, EJBQLUpdate, EJBQLUpdateField, EJBQLUpdateItem, EJBQLUpdateValue, EJBQLUpper, EJBQLWhere, SimpleNode

    public interface Node

extends EJBQLExpression

A JJTree-compliant tree node interface.

Since:
  3.0
Author:
  Andrus Adamchik

Method Summary
`void` | `jjtAddChild(Node n, int i)` This method tells the node to add its argument to the node's list of children.
`void` | `jjtClose()` This method is called after all the child nodes have been added.
`Node` | `jjtGetChild(int i)` This method returns a child node.
`int` | `jjtGetNumChildren()` Return the number of children the node has.
`Node` | `jjtGetParent()`
`void` | `jjtOpen()` This method is called after the node has been made the current node.
`void` | `jjtSetParent(Node n)` This pair of methods are used to inform the node of its parent.

Methods inherited from interface org.apache.cayenne.ejbql.EJBQLExpression
`getChild, getChildrenCount, getText, isNegated, visit`

Method Detail

### jjtOpen

    void jjtOpen()

  This method is called after the node has been made the current node. It indicates that child nodes can now be added to it.

### jjtClose

    void jjtClose()

  This method is called after all the child nodes have been added.

### jjtSetParent

    void jjtSetParent(Node n)

  This pair of methods are used to inform the node of its parent.

### jjtGetParent

    Node jjtGetParent()

### jjtAddChild

    void jjtAddChild(Node n,
                     int i)

  This method tells the node to add its argument to the node's list of children.

### jjtGetChild

    Node jjtGetChild(int i)

  This method returns a child node. The children are numbered from zero, left to right.

### jjtGetNumChildren

    int jjtGetNumChildren()

  Return the number of children the node has.

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