Package com.espertech.esper.common.client.soda

Class RowLimitClause

java.lang.Object

com.espertech.esper.common.client.soda.RowLimitClause

All Implemented Interfaces:

Serializable

public class RowLimitClause
extends Object
implements Serializable

Specification object for a row limit.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
RowLimitClause()	Ctor.
RowLimitClause(Integer numRows, Integer optionalOffsetRows, String numRowsVariable, String optionalOffsetRowsVariable)	Ctor.

Method Summary

Modifier and Type	Method	Description
static RowLimitClause	create(int numRows)	Creates a row limit clause.
static RowLimitClause	create(int numRows, int offset)	Creates a row limit clause.
static RowLimitClause	create(String numRowsVariable)	Creates a row limit clause.
static RowLimitClause	create(String numRowsVariable, String offsetVariable)	Creates a row limit clause.
Integer	getNumRows()	Returns the maximum number of rows, or null if using variable.
String	getNumRowsVariable()	Returns the variable providing maximum number of rows, or null if using constant.
Integer	getOptionalOffsetRows()	Returns the offset, or null if using variable or not using offset.
String	getOptionalOffsetRowsVariable()	Returns the name of the variable providing offset values.
void	setNumRows(Integer numRows)	Sets the maximum number of rows.
void	setNumRowsVariable(String numRowsVariable)	Sets the variable providing maximum number of rows.
void	setOptionalOffsetRows(Integer optionalOffsetRows)	Sets the offset.
void	setOptionalOffsetRowsVariable(String optionalOffsetRowsVariable)	Sets the name of the variable providing offset values.
void	toEPL(StringWriter writer)	Renders the clause in textual representation.

Methods inherited from class java.lang.Object

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

Constructor Details

RowLimitClause

public RowLimitClause()

Ctor.

RowLimitClause

public RowLimitClause(Integer numRows,
 Integer optionalOffsetRows,
 String numRowsVariable,
 String optionalOffsetRowsVariable)

Ctor.

Parameters:

numRows - maximum number of rows

optionalOffsetRows - offset

numRowsVariable - name of the variable providing the maximum number of rows

optionalOffsetRowsVariable - name of the variable providing the offset

Method Details

create

public static RowLimitClause create(String numRowsVariable)

Creates a row limit clause.

Parameters:

numRowsVariable - name of the variable providing the maximum number of rows

Returns:

clause

create

public static RowLimitClause create(String numRowsVariable,
 String offsetVariable)

Creates a row limit clause.

Parameters:

numRowsVariable - name of the variable providing the maximum number of rows

offsetVariable - name of the variable providing the offset

Returns:

clause

create

public static RowLimitClause create(int numRows)

Creates a row limit clause.

Parameters:

numRows - maximum number of rows

Returns:

clause

create

public static RowLimitClause create(int numRows,
 int offset)

Creates a row limit clause.

Parameters:

numRows - maximum number of rows

offset - offset

Returns:

clause

getNumRows

public Integer getNumRows()

Returns the maximum number of rows, or null if using variable.

Returns:

max num rows

setNumRows

public void setNumRows(Integer numRows)

Sets the maximum number of rows.

Parameters:

numRows - max num rows

getOptionalOffsetRows

public Integer getOptionalOffsetRows()

Returns the offset, or null if using variable or not using offset.

Returns:

offset

setOptionalOffsetRows

public void setOptionalOffsetRows(Integer optionalOffsetRows)

Sets the offset.

Parameters:

optionalOffsetRows - offset

getNumRowsVariable

public String getNumRowsVariable()

Returns the variable providing maximum number of rows, or null if using constant.

Returns:

max num rows variable

setNumRowsVariable

public void setNumRowsVariable(String numRowsVariable)

Sets the variable providing maximum number of rows.

Parameters:

numRowsVariable - max num rows variable

getOptionalOffsetRowsVariable

public String getOptionalOffsetRowsVariable()

Returns the name of the variable providing offset values.

Returns:

variable name for offset

setOptionalOffsetRowsVariable

public void setOptionalOffsetRowsVariable(String optionalOffsetRowsVariable)

Sets the name of the variable providing offset values.

Parameters:

optionalOffsetRowsVariable - variable name for offset

toEPL

public void toEPL(StringWriter writer)

Renders the clause in textual representation.

Parameters:

writer - to output to