com.espertech.esper.client.soda

Class PatternExprBase

java.lang.Object

com.espertech.esper.client.soda.PatternExprBase

All Implemented Interfaces:

PatternExpr, Serializable

Direct Known Subclasses:

PatternAndExpr, PatternEveryDistinctExpr, PatternEveryExpr, PatternExprPlaceholder, PatternFilterExpr, PatternFollowedByExpr, PatternMatchUntilExpr, PatternNotExpr, PatternOrExpr

public abstract class PatternExprBase
extends Object
implements PatternExpr

Abstract base class for all pattern expressions.

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PatternExprBase() Ctor.

Method Summary

Modifier and Type	Method and Description
protected void	addChild(PatternExpr expression) Adds a sub-expression to the pattern expression.
List<PatternExpr>	getChildren() Returns the list of pattern sub-expressions (child expressions) to the current pattern expression node.
String	getTreeObjectName() Returns the id for the pattern expression, for use by tools.
void	setChildren(List<PatternExpr> children) Sets the list of pattern sub-expressions (child expressions) to the current pattern expression node.
void	setTreeObjectName(String treeObjectName) Sets and id for the pattern expression, for use by tools.
void	toEPL(StringWriter writer, PatternExprPrecedenceEnum parentPrecedence, EPStatementFormatter formatter) Renders the pattern expression and all it's child expressions, in full tree depth, as a string in language syntax.
abstract void	toPrecedenceFreeEPL(StringWriter writer, EPStatementFormatter formatter) Renders the expressions and all it's child expression, in full tree depth, as a string in language syntax.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.espertech.esper.client.soda.PatternExpr

getPrecedence

Constructor Detail

PatternExprBase

protected PatternExprBase()

Ctor.

Method Detail

getTreeObjectName

public String getTreeObjectName()

Description copied from interface: PatternExpr

Returns the id for the pattern expression, for use by tools.

Specified by:

getTreeObjectName in interface PatternExpr

Returns:

id

setTreeObjectName

public void setTreeObjectName(String treeObjectName)

Description copied from interface: PatternExpr

Sets and id for the pattern expression, for use by tools.

Specified by:

setTreeObjectName in interface PatternExpr

Parameters:

treeObjectName - id

getChildren

public List<PatternExpr> getChildren()

Description copied from interface: PatternExpr

Returns the list of pattern sub-expressions (child expressions) to the current pattern expression node.

Specified by:

getChildren in interface PatternExpr

Returns:

pattern child expressions or empty list if there are no child expressions

setChildren

public void setChildren(List<PatternExpr> children)

Description copied from interface: PatternExpr

Sets the list of pattern sub-expressions (child expressions) to the current pattern expression node.

Specified by:

setChildren in interface PatternExpr

Parameters:

children - pattern child expressions or empty list if there are no child expressions

addChild

protected void addChild(PatternExpr expression)

Adds a sub-expression to the pattern expression.

Parameters:

expression - to add

toEPL

public final void toEPL(StringWriter writer,
                        PatternExprPrecedenceEnum parentPrecedence,
                        EPStatementFormatter formatter)

Description copied from interface: PatternExpr

Renders the pattern expression and all it's child expressions, in full tree depth, as a string in language syntax.

Specified by:

toEPL in interface PatternExpr

Parameters:

writer - is the output to use

parentPrecedence - precedence

formatter - formatter

toPrecedenceFreeEPL

public abstract void toPrecedenceFreeEPL(StringWriter writer,
                                         EPStatementFormatter formatter)

Renders the expressions and all it's child expression, in full tree depth, as a string in language syntax.

Parameters:

writer - is the output to use

formatter - for newline-whitespace formatting