com.espertech.esper.client.soda

Class UpdateClause

java.lang.Object

com.espertech.esper.client.soda.UpdateClause

All Implemented Interfaces:

MetaDefItem, Serializable

public class UpdateClause
extends Object
implements MetaDefItem, Serializable

Specification for the update clause.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
UpdateClause() Ctor.
UpdateClause(String eventType, String optionalAsClauseStreamName) Ctor.

Method Summary

Modifier and Type	Method and Description
UpdateClause	addAssignment(Expression expression) Adds a property to set to the clause.
static UpdateClause	create(String eventType, Expression expression) Ctor.
List<Assignment>	getAssignments() Returns the list of property assignments.
String	getEventType() Returns the name of the event type to update.
String	getOptionalAsClauseStreamName() Returns the stream name.
Expression	getOptionalWhereClause() Returns the where-clause if any.
static void	renderEPLAssignments(StringWriter writer, List<Assignment> assignments) Write assignments.
void	setAssignments(List<Assignment> assignments) Sets a list of property assignments.
void	setEventType(String eventType) Returns the name of the event type to update.
void	setOptionalAsClauseStreamName(String optionalAsClauseStreamName) Returns the stream name.
void	setOptionalWhereClause(Expression optionalWhereClause) Sets the where-clause if any.
void	toEPL(StringWriter writer) Renders the clause in EPL.

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdateClause

public UpdateClause()

Ctor.

UpdateClause

public UpdateClause(String eventType,
                    String optionalAsClauseStreamName)

Ctor.

Parameters:

eventType - the name of the type to update

optionalAsClauseStreamName - as-clause for update, if any

Method Detail

create

public static UpdateClause create(String eventType,
                                  Expression expression)

Ctor.

Parameters:

eventType - the name of the type to update

expression - expression returning a value to write

Returns:

update clause

addAssignment

public UpdateClause addAssignment(Expression expression)

Adds a property to set to the clause.

Parameters:

expression - expression providing the new property value

Returns:

clause

getAssignments

public List<Assignment> getAssignments()

Returns the list of property assignments.

Returns:

pair of property name and expression

setAssignments

public void setAssignments(List<Assignment> assignments)

Sets a list of property assignments.

Parameters:

assignments - list of pairs of property name and expression

getEventType

public String getEventType()

Returns the name of the event type to update.

Returns:

name of type

setEventType

public void setEventType(String eventType)

Returns the name of the event type to update.

Parameters:

eventType - name of type

getOptionalWhereClause

public Expression getOptionalWhereClause()

Returns the where-clause if any.

Returns:

where clause

setOptionalWhereClause

public void setOptionalWhereClause(Expression optionalWhereClause)

Sets the where-clause if any.

Parameters:

optionalWhereClause - where clause

getOptionalAsClauseStreamName

public String getOptionalAsClauseStreamName()

Returns the stream name.

Returns:

stream name

setOptionalAsClauseStreamName

public void setOptionalAsClauseStreamName(String optionalAsClauseStreamName)

Returns the stream name.

Parameters:

optionalAsClauseStreamName - stream name

toEPL

public void toEPL(StringWriter writer)

Renders the clause in EPL.

Parameters:

writer - to output to

renderEPLAssignments

public static void renderEPLAssignments(StringWriter writer,
                                        List<Assignment> assignments)

Write assignments.

Parameters:

writer - to write to

assignments - to write