parquet-column/src/main/java/org/apache/parquet/filter/ColumnRecordFilter.java
public static final UnboundRecordFilter column(final String columnPath,
                                                 final ColumnPredicates.Predicate predicate) {
    checkNotNull(columnPath, "columnPath");
    checkNotNull(predicate,  "predicate");
    return new UnboundRecordFilter() {
      final String[] filterPath = columnPath.split("\\.");
      @Override
      public RecordFilter bind(Iterable<ColumnReader> readers) {
        for (ColumnReader reader : readers) {
          if ( Arrays.equals( reader.getDescriptor().getPath(), filterPath)) {
            return new ColumnRecordFilter(reader, predicate);
          }
        }
        throw new IllegalArgumentException( "Column " + columnPath + " does not exist.");
      }
    };
  }
public static final UnboundRecordFilter column(final String columnPath,
                                                 final ColumnPredicates.Predicate predicate) {
    checkNotNull(columnPath, "columnPath");
    checkNotNull(predicate,  "predicate");
    return new UnboundRecordFilter() {
      final String[] filterPath = columnPath.split("\\.");
      @Override
      public RecordFilter bind(Iterable<ColumnReader> readers) {
        for (ColumnReader reader : readers) {
          if ( Arrays.equals( reader.getDescriptor().getPath(), filterPath)) {
            return new ColumnRecordFilter(reader, predicate);
          }
        }
        throw new IllegalArgumentException( "Column " + columnPath + " does not exist.");
      }
    };
  }
public static final UnboundRecordFilter column ( final String columnPath , final ColumnPredicates . Predicate predicate ) { checkNotNull ( columnPath , "columnPath" ) ; checkNotNull ( predicate , "predicate" ) ; return new UnboundRecordFilter ( ) { final String [ ] filterPath = columnPath . split ( "\\." ) ; @ Override public RecordFilter bind ( Iterable < ColumnReader > readers ) { for ( ColumnReader reader : readers ) { if ( Arrays . equals ( reader . getDescriptor ( ) . getPath ( ) , filterPath ) ) { return new ColumnRecordFilter ( reader , predicate ) ; } } throw new IllegalArgumentException ( "Column " + columnPath + " does not exist." ) ; } } ; }
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.

@param columnPath Dot separated path specifier, e.g. "engine.capacity"
@param predicate Should call getBinary etc. and check the value
@return a column filter
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 .