PredicateAstNode (Pinot Common 0.10.0 API)

java.lang.Object
- org.apache.pinot.pql.parsers.pql2.ast.BaseAstNode
- - org.apache.pinot.pql.parsers.pql2.ast.PredicateAstNode

All Implemented Interfaces:

AstNode

Direct Known Subclasses:

BetweenPredicateAstNode, ComparisonPredicateAstNode, InPredicateAstNode, IsNullPredicateAstNode, PredicateListAstNode, PredicateParenthesisGroupAstNode, RegexpLikePredicateAstNode, TextMatchPredicateAstNode
```
public abstract class PredicateAstNode
extends BaseAstNode
```
Common interface and implementation for predicate AST nodes.

Field Summary

Fields
Modifier and Type Field Description

protected String _identifier

Constructor Summary

Constructors
Constructor Description

PredicateAstNode()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract Expression`	`buildFilterExpression()`	Create the query expression tree for the where clause
`abstract FilterQueryTree`	`buildFilterQueryTree()`	Create the query tree for the where clause
`String`	`getIdentifier()`	Returns the name of the identifier on the left hand side of this predicate, or null if the predicate is not based on an identifier.

Methods inherited from class org.apache.pinot.pql.parsers.pql2.ast.BaseAstNode
addChild, doneProcessingChildren, getChildren, getParent, hasChildren, hasParent, sendBrokerRequestUpdateToChildren, sendPinotQueryUpdateToChildren, setParent, toString, toString, updateBrokerRequest, updatePinotQuery

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

- Field Detail
  - _identifier
```
protected String _identifier
```
- Constructor Detail
  - PredicateAstNode
```
public PredicateAstNode()
```
- Method Detail
  - buildFilterQueryTree
```
public abstract FilterQueryTree buildFilterQueryTree()
```
    Create the query tree for the where clause
    
    Returns:
  - buildFilterExpression
```
public abstract Expression buildFilterExpression()
```
    Create the query expression tree for the where clause
    
    Returns:
  - getIdentifier
```
public String getIdentifier()
```
    Returns the name of the identifier on the left hand side of this predicate, or null if the predicate is not based on an identifier.
    
    Returns:
    
    The identifier or null if there is no identifier on the left hand side of this predicate