com.espertech.esper.core.service
Interface StatementVariableRef

All Known Implementing Classes:

StatementVariableRefImpl

public interface StatementVariableRef

Service for maintaining references between statement name and variables.

Method Summary

void	addConfiguredVariable(java.lang.String variableName) Add a preconfigured variable.
void	addReferences(java.lang.String statementName, java.util.Set<java.lang.String> variablesReferenced, ExprTableAccessNode[] tableNodes) Add a reference from a statement name to a set of variables.
void	addReferences(java.lang.String statementName, java.lang.String variableReferenced) Add a reference from a statement name to a single variable.
java.util.Set<java.lang.String>	getStatementNamesForVar(java.lang.String variableName) Returns the set of statement names that use a given variable.
boolean	isInUse(java.lang.String variableName) Returns true if the variable is listed as in-use by any statement, or false if not
void	removeConfiguredVariable(java.lang.String variableName) Remove a preconfigured variable.
void	removeReferencesStatement(java.lang.String statementName) Remove all references for a given statement.
void	removeReferencesVariable(java.lang.String variableName) Remove all references for a given event type.

Method Detail

isInUse

boolean isInUse(java.lang.String variableName)

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

Parameters:

variableName - name

Returns:

indicator whether variable is in use

getStatementNamesForVar

java.util.Set<java.lang.String> getStatementNamesForVar(java.lang.String variableName)

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

Parameters:

variableName - name

Returns:

set of statements or null if none found

addReferences

void addReferences(java.lang.String statementName,
                   java.util.Set<java.lang.String> variablesReferenced,
                   ExprTableAccessNode[] tableNodes)

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

Parameters:

statementName - name of statement

variablesReferenced - types

tableNodes - table nodes, if any

addReferences

void addReferences(java.lang.String statementName,
                   java.lang.String variableReferenced)

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

Parameters:

statementName - name of statement

variableReferenced - variable

removeReferencesStatement

void removeReferencesStatement(java.lang.String statementName)

Remove all references for a given statement.

Parameters:

statementName - statement name

removeReferencesVariable

void removeReferencesVariable(java.lang.String variableName)

Remove all references for a given event type.

Parameters:

variableName - variable name

addConfiguredVariable

void addConfiguredVariable(java.lang.String variableName)

Add a preconfigured variable.

Parameters:

variableName - name

removeConfiguredVariable

void removeConfiguredVariable(java.lang.String variableName)

Remove a preconfigured variable.

Parameters:

variableName - var