com.espertech.esper.core.service

Class StatementVariableRefImpl

java.lang.Object

com.espertech.esper.core.service.StatementVariableRefImpl

All Implemented Interfaces:

StatementVariableRef

public class StatementVariableRefImpl
extends Object
implements StatementVariableRef

Service for holding references between statements and their variable use.

Constructor Summary

Constructors

Constructor and Description
StatementVariableRefImpl(VariableService variableService, TableService tableService, NamedWindowMgmtService namedWindowMgmtService) Ctor.

Method Summary

Modifier and Type	Method and Description
void	addConfiguredVariable(String variableName) Add a preconfigured variable.
void	addReferences(String statementName, Set<String> variablesReferenced, ExprTableAccessNode[] tableNodes) Add a reference from a statement name to a set of variables.
void	addReferences(String statementName, String variableReferenced) Add a reference from a statement name to a single variable.
Set<String>	getStatementNamesForVar(String variableName) Returns the set of statement names that use a given variable.
protected HashMap<String,Set<String>>	getStmtToVariable() For testing, returns the mapping of statement names to variable names.
protected HashMap<String,Set<String>>	getVariableToStmt() For testing, returns the mapping of variable name to statement names.
boolean	isInUse(String variable) Returns true if the variable is listed as in-use by any statement, or false if not
void	removeConfiguredVariable(String variableName) Remove a preconfigured variable.
void	removeReferencesStatement(String statementName) Remove all references for a given statement.
void	removeReferencesVariable(String name) Remove all references for a given event type.

Methods inherited from class java.lang.Object

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

Constructor Detail

StatementVariableRefImpl

public StatementVariableRefImpl(VariableService variableService,
                                TableService tableService,
                                NamedWindowMgmtService namedWindowMgmtService)

Ctor.

Parameters:

variableService - variables

tableService - table service

namedWindowMgmtService - named window service

Method Detail

addConfiguredVariable

public void addConfiguredVariable(String variableName)

Description copied from interface: StatementVariableRef

Add a preconfigured variable.

Specified by:

addConfiguredVariable in interface StatementVariableRef

Parameters:

variableName - name

removeConfiguredVariable

public void removeConfiguredVariable(String variableName)

Description copied from interface: StatementVariableRef

Remove a preconfigured variable.

Specified by:

removeConfiguredVariable in interface StatementVariableRef

Parameters:

variableName - var

addReferences

public void addReferences(String statementName,
                          Set<String> variablesReferenced,
                          ExprTableAccessNode[] tableNodes)

Description copied from interface: StatementVariableRef

Add a reference from a statement name to a set of variables.

Specified by:

addReferences in interface StatementVariableRef

Parameters:

statementName - name of statement

variablesReferenced - types

tableNodes - table nodes, if any

addReferences

public void addReferences(String statementName,
                          String variableReferenced)

Description copied from interface: StatementVariableRef

Add a reference from a statement name to a single variable.

Specified by:

addReferences in interface StatementVariableRef

Parameters:

statementName - name of statement

variableReferenced - variable

removeReferencesStatement

public void removeReferencesStatement(String statementName)

Description copied from interface: StatementVariableRef

Remove all references for a given statement.

Specified by:

removeReferencesStatement in interface StatementVariableRef

Parameters:

statementName - statement name

removeReferencesVariable

public void removeReferencesVariable(String name)

Description copied from interface: StatementVariableRef

Remove all references for a given event type.

Specified by:

removeReferencesVariable in interface StatementVariableRef

Parameters:

name - variable name

isInUse

public boolean isInUse(String variable)

Description copied from interface: StatementVariableRef

Returns true if the variable is listed as in-use by any statement, or false if not

Specified by:

isInUse in interface StatementVariableRef

Parameters:

variable - name

Returns:

indicator whether variable is in use

getStatementNamesForVar

public Set<String> getStatementNamesForVar(String variableName)

Description copied from interface: StatementVariableRef

Returns the set of statement names that use a given variable.

Specified by:

getStatementNamesForVar in interface StatementVariableRef

Parameters:

variableName - name

Returns:

set of statements or null if none found

getVariableToStmt

protected HashMap<String,Set<String>> getVariableToStmt()

For testing, returns the mapping of variable name to statement names.

Returns:

mapping

getStmtToVariable

protected HashMap<String,Set<String>> getStmtToVariable()

For testing, returns the mapping of statement names to variable names.

Returns:

mapping