[HBASE-3453] How about RowPaginationFilter

• Type: Wish
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 0.90.1
• Component/s: Client

Environment

windows 7

• Assignee: Unassigned
• Reporter: ncanis
• Created: 20/Jan/11 04:11
• Updated: 12/Jun/22 00:48
• Resolved: 19/Jul/14 01:03

Description

I know hbase has already PageFilter.
But, sometime we need to get row data from specified position.

• only for newbie:
  If you want to write custom Filter, you also add filter class to an hbase server classpath.

RowPaginationFilter

/**
	 * Constructor that takes a maximum page size.
	 * 
	 * get row from offset to offset+limit ( offset<= row<=offset+limit )
	 * @param offset start position
	 * @param limit count from offset position
	 */
	public RowPaginationFilter(final int offset, final int limit) {
		this.offset = offset;
		this.limit = limit;
	}

	//true to exclude row, false to include row.
	@Override
	public boolean filterRow() {	
	
		boolean isExclude = this.rowsAccepted < this.offset || this.rowsAccepted>=this.limit+this.offset;

		rowsAccepted++;
		return isExclude;
	}

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