org.cloudgraph.hbase.scan

Class ScanLiteralAssembler

java.lang.Object

org.plasma.query.visitor.DefaultQueryVisitor

org.cloudgraph.hbase.scan.ScanLiteralAssembler

All Implemented Interfaces:

org.plasma.query.visitor.QueryVisitor

public class ScanLiteralAssembler
extends org.plasma.query.visitor.DefaultQueryVisitor

Assembles the set of data "flavor" and data type specific scan literals used to construct composite partial row (start/stop) key pair.

Since:

0.5

Author:

Scott Cinnamond

See Also:

DataGraphMapping, TableMapping

Field Summary

Fields

Modifier and Type	Field and Description
protected org.plasma.query.model.LogicalOperatorName	contextLogicalOperator
protected org.plasma.sdo.PlasmaProperty	contextProperty
protected String	contextPropertyPath
protected org.plasma.query.model.RelationalOperator	contextRelationalOperator
protected org.plasma.sdo.PlasmaType	contextType
protected org.plasma.query.model.PredicateOperator	contextWildcardOperator
protected ScanLiterals	fuzzyKeyScanLiterals
protected DataGraphMapping	graph
protected StoreMappingContext	mappingContext
protected ScanLiterals	partialKeyScanLiterals
protected org.plasma.sdo.PlasmaType	rootType
protected ScanLiteralFactory	scanLiteralFactory
protected TableMapping	table

Constructor Summary

Constructors

Constructor and Description
ScanLiteralAssembler(org.plasma.sdo.PlasmaType rootType, StoreMappingContext mappingContext)

Method Summary

Modifier and Type	Method and Description
void	assemble(org.plasma.query.model.Where where, org.plasma.sdo.PlasmaType contextType) Assemble the set of data "flavor" and data type specific scan literals used to construct composite partial row (start/stop) key pair.
ScanLiterals	getFuzzyKeyScanResult()
ScanLiterals	getPartialKeyScanResult()
void	start(org.plasma.query.model.GroupOperator operator)
void	start(org.plasma.query.model.Literal literal) Process the traversal start event for a query literal within an expression.
void	start(org.plasma.query.model.LogicalOperator operator) Process a logical operator query traversal start event.
void	start(org.plasma.query.model.NullLiteral nullLiteral) (non-Javadoc)
void	start(org.plasma.query.model.PredicateOperator operator)
void	start(org.plasma.query.model.Property property) Process the traversal start event for a query property within an expression just traversing the property path if exists and capturing context information for the current expression.
void	start(org.plasma.query.model.RelationalOperator operator)

Methods inherited from class org.plasma.query.visitor.DefaultQueryVisitor

end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, end, getContext, start, start, start, start, start, start, start, start, start, start, start, start, start, start, start, start, start, start

Methods inherited from class java.lang.Object

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

Field Detail

rootType

protected org.plasma.sdo.PlasmaType rootType

mappingContext

protected StoreMappingContext mappingContext

contextType

protected org.plasma.sdo.PlasmaType contextType

contextProperty

protected org.plasma.sdo.PlasmaProperty contextProperty

contextPropertyPath

protected String contextPropertyPath

contextRelationalOperator

protected org.plasma.query.model.RelationalOperator contextRelationalOperator

contextLogicalOperator

protected org.plasma.query.model.LogicalOperatorName contextLogicalOperator

contextWildcardOperator

protected org.plasma.query.model.PredicateOperator contextWildcardOperator

graph

protected DataGraphMapping graph

table

protected TableMapping table

partialKeyScanLiterals

protected ScanLiterals partialKeyScanLiterals

fuzzyKeyScanLiterals

protected ScanLiterals fuzzyKeyScanLiterals

scanLiteralFactory

protected ScanLiteralFactory scanLiteralFactory

Constructor Detail

ScanLiteralAssembler

public ScanLiteralAssembler(org.plasma.sdo.PlasmaType rootType,
                            StoreMappingContext mappingContext)

Method Detail

getPartialKeyScanResult

public ScanLiterals getPartialKeyScanResult()

getFuzzyKeyScanResult

public ScanLiterals getFuzzyKeyScanResult()

assemble

public void assemble(org.plasma.query.model.Where where,
                     org.plasma.sdo.PlasmaType contextType)

Assemble the set of data "flavor" and data type specific scan literals used to construct composite partial row (start/stop) key pair.

Parameters:

where - the row predicate hierarchy

contextType - the context type which may be the root type or another type linked by one or more relations to the root

start

public void start(org.plasma.query.model.Property property)

Process the traversal start event for a query property within an expression just traversing the property path if exists and capturing context information for the current expression.

Specified by:

start in interface org.plasma.query.visitor.QueryVisitor

Overrides:

start in class org.plasma.query.visitor.DefaultQueryVisitor

See Also:

DefaultQueryVisitor.start(org.plasma.query.model.Property)

start

public void start(org.plasma.query.model.Literal literal)

Process the traversal start event for a query literal within an expression.

Specified by:

start in interface org.plasma.query.visitor.QueryVisitor

Overrides:

start in class org.plasma.query.visitor.DefaultQueryVisitor

Parameters:

literal - the expression literal

Throws:

GraphServiceException - if no user defined row-key token is configured for the current literal context.

start

public void start(org.plasma.query.model.NullLiteral nullLiteral)

(non-Javadoc)

Specified by:

start in interface org.plasma.query.visitor.QueryVisitor

Overrides:

start in class org.plasma.query.visitor.DefaultQueryVisitor

See Also:

DefaultQueryVisitor.start(org.plasma.query.model.NullLiteral)

start

public void start(org.plasma.query.model.LogicalOperator operator)

Process a logical operator query traversal start event.

Specified by:

start in interface org.plasma.query.visitor.QueryVisitor

Overrides:

start in class org.plasma.query.visitor.DefaultQueryVisitor

start

public void start(org.plasma.query.model.PredicateOperator operator)

Specified by:

start in interface org.plasma.query.visitor.QueryVisitor

Overrides:

start in class org.plasma.query.visitor.DefaultQueryVisitor

start

public void start(org.plasma.query.model.RelationalOperator operator)

Specified by:

start in interface org.plasma.query.visitor.QueryVisitor

Overrides:

start in class org.plasma.query.visitor.DefaultQueryVisitor

start

public void start(org.plasma.query.model.GroupOperator operator)

Specified by:

start in interface org.plasma.query.visitor.QueryVisitor

Overrides:

start in class org.plasma.query.visitor.DefaultQueryVisitor