org.apache.hawq.pxf.plugins.hive

Class HiveFilterBuilder

java.lang.Object

org.apache.hawq.pxf.plugins.hive.HiveFilterBuilder

All Implemented Interfaces:

FilterParser.FilterBuilder

public class HiveFilterBuilder
extends java.lang.Object
implements FilterParser.FilterBuilder

Uses the filter parser code to build a filter object, either simple - a single FilterParser.BasicFilter object or a compound - a List of FilterParser.BasicFilter objects. HiveAccessor will use the filter for partition filtering.

Constructor Summary

Constructors

Constructor and Description
HiveFilterBuilder(InputData input) Constructs a HiveFilterBuilder object.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	build(FilterParser.Operation opId, java.lang.Object leftOperand, java.lang.Object rightOperand) Builds the filter.
java.lang.Object	getFilterObject(java.lang.String filterString) Translates a filterString into a FilterParser.BasicFilter or a list of such filters.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HiveFilterBuilder

public HiveFilterBuilder(InputData input)

Constructs a HiveFilterBuilder object.

Parameters:

input - input data containing filter string

Method Detail

getFilterObject

public java.lang.Object getFilterObject(java.lang.String filterString)
                                 throws java.lang.Exception

Translates a filterString into a FilterParser.BasicFilter or a list of such filters.

Parameters:

filterString - the string representation of the filter

Returns:

a single FilterParser.BasicFilter object or a List of FilterParser.BasicFilter objects.

Throws:

java.lang.Exception - if parsing the filter failed or filter is not a basic filter or list of basic filters

build

public java.lang.Object build(FilterParser.Operation opId,
                              java.lang.Object leftOperand,
                              java.lang.Object rightOperand)
                       throws java.lang.Exception

Description copied from interface: FilterParser.FilterBuilder

Builds the filter.

Specified by:

build in interface FilterParser.FilterBuilder

Parameters:

opId - the parse operation to perform

leftOperand - the left operand

rightOperand - the right operand

Returns:

the built filter

Throws:

java.lang.Exception - if building the filter failed