parquet.filter

Class ColumnRecordFilter

java.lang.Object

parquet.filter.ColumnRecordFilter

All Implemented Interfaces:

RecordFilter

public final class ColumnRecordFilter
extends Object
implements RecordFilter

Record filter which applies the supplied predicate to the specified column.

Method Summary

Methods

Modifier and Type	Method and Description
static UnboundRecordFilter	column(String columnPath, ColumnPredicates.Predicate predicate) Factory method for record filter which applies the supplied predicate to the specified column.
boolean	isMatch() Works out whether the current record can pass through the filter.

Methods inherited from class java.lang.Object

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

Method Detail

column

public static final UnboundRecordFilter column(String columnPath,
                         ColumnPredicates.Predicate predicate)

Factory method for record filter which applies the supplied predicate to the specified column. Note that if searching for a repeated sub-attribute it will only ever match against the first instance of it in the object.

Parameters:

columnPath - Dot separated path specifier, e.g. "engine.capacity"

predicate - Should call getBinary etc. and check the value

isMatch

public boolean isMatch()

Description copied from interface: RecordFilter

Works out whether the current record can pass through the filter.

Specified by:

isMatch in interface RecordFilter

Returns:

true if the current value for the column reader matches the predicate.