Package org.cloudgraph.hbase.filter

Contains HBase row and column filter assembly logic.

See: Description

Interface Summary

Interface	Description
HBaseFilterAssembler	Common interface for HBase row and column filter assemblers.
PredicateFilterAssembler	Assembles an HBase predicate filter hierarchy based on one or more query predicates.

Class Summary

Class	Description
BinaryPrefixColumnFilterAssembler	Creates an HBase column filter list using QualifierFilter and BinaryPrefixComparator and recreating composite column qualifier prefixes for comparison using CompositeColumnKeyFactory.
ColumnPredicateFilterAssembler	Creates an HBase value and qualifier filter hierarchy to return HBase scan results representing part of a graph "slice".
ColumnPredicateVisitor	Creates an HBase value and qualifier filter hierarchy using QualifierFilter /ValueFilter pairs recreating composite column qualifier prefixes using CompositeColumnKeyFactory.
FilterHierarchyAssembler	Supports assembly of complex HBase filter hierarchies representing query predicate expression trees using a filter stack.
FilterListAssembler	Supports assembly of HBase filter lists.
GraphFetchColumnFilterAssembler	Creates an HBase column filter set based on the given criteria which leverages the HBase MultipleColumnPrefixFilter to return only columns which make up the selected data graph.
InitialFetchColumnFilterAssembler	Creates an HBase column filter set based on the given criteria which leverages the HBase MultipleColumnPrefixFilter to return only columns for the graph root as well as any columns associated with type nodes linked through one of more singular relations.
MultiColumnPredicateFilterAssembler	Creates an HBase value and qualifier filter hierarchy to return HBase scan results representing a graph "slice".
MultiColumnPredicateVisitor	Creates an HBase column filter hierarchy using QualifierFilter /ValueFilter pairs recreating composite column qualifier prefixes using CompositeColumnKeyFactory.
PredicateColumnFilterAssembler	Creates an HBase column filter hierarchy to return HBase scan results representing part of a graph "slice" from the set of columns making up a collection or collection property within the graph.
PredicateRowFilterAssembler	Processes a where predicate expression tree into a set of HBase row filters arranged within a hierarchy of HBase filter lists.
PredicateUtil
PredicateVisitor	Processes visitor events for query model elements common to both row and column filters, such as relational and group operators, within the context of HBase filter hierarchy assembly and maintains various context information useful to subclasses.
RowPredicateVisitor	Creates a hierarchy of regular expression based HBase row filters using GraphRowKeyExpressionFactory and HBase RegexStringComparator.
StatefullBinaryPrefixColumnFilterAssembler	Creates an HBase column filter list using QualifierFilter and BinaryPrefixComparator and recreating composite column qualifier prefixes for comparison using StatefullColumnKeyFactory.

Package org.cloudgraph.hbase.filter Description

Contains HBase row and column filter assembly logic.

HBase filters may be collected into lists using FilterList each with a MUST_PASS_ALL or MUST_PASS_ONE (logical) operator. Lists may then be assembled into hierarchies used to represent complex expression trees filtering either rows or columns in HBase.