org.pentaho.reporting.engine.classic.core.function.formula

Class RowCountFunctionDescription

java.lang.Object

org.pentaho.reporting.libraries.formula.function.AbstractFunctionDescription

org.pentaho.reporting.engine.classic.core.function.formula.RowCountFunctionDescription

All Implemented Interfaces:

Serializable, org.pentaho.reporting.libraries.formula.function.FunctionDescription

public class RowCountFunctionDescription
extends org.pentaho.reporting.libraries.formula.function.AbstractFunctionDescription

The function-description class for the IsExportTypeFunction. This class holds meta-data for the formula function.

Author:

Thomas Morgner

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RowCountFunctionDescription() Default Constructor.

Method Summary

Modifier and Type	Method and Description
org.pentaho.reporting.libraries.formula.function.FunctionCategory	getCategory() Returns the function category.
int	getParameterCount() Returns the number of parameters expected by the function.
org.pentaho.reporting.libraries.formula.typing.Type	getParameterType(int position) Returns the parameter type of the function parameters.
org.pentaho.reporting.libraries.formula.typing.Type	getValueType() Returns the expected value type.
boolean	isParameterMandatory(int position) Defines, whether the parameter at the given position is mandatory.

Methods inherited from class org.pentaho.reporting.libraries.formula.function.AbstractFunctionDescription

getCanonicalName, getDefaultValue, getDescription, getDisplayName, getParameterDescription, getParameterDisplayName, isDeprecated, isExperimental, isInfiniteParameterCount, isVolatile

Methods inherited from class java.lang.Object

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

Constructor Detail

RowCountFunctionDescription

public RowCountFunctionDescription()

Default Constructor.

Method Detail

getValueType

public org.pentaho.reporting.libraries.formula.typing.Type getValueType()

Returns the expected value type. This function returns a LogicalType.

Returns:

LogicalType.TYPE

getParameterCount

public int getParameterCount()

Returns the number of parameters expected by the function.

Returns:

1.

getParameterType

public org.pentaho.reporting.libraries.formula.typing.Type getParameterType(int position)

Returns the parameter type of the function parameters.

Parameters:

position - the parameter index.

Returns:

always TextType.TYPE.

isParameterMandatory

public boolean isParameterMandatory(int position)

Defines, whether the parameter at the given position is mandatory. A mandatory parameter must be filled in, while optional parameters need not to be filled in.

Parameters:

position - the position of the parameter.

Returns:

true, as all parameters are mandatory.

getCategory

public org.pentaho.reporting.libraries.formula.function.FunctionCategory getCategory()

Returns the function category. The function category groups functions by their expected use.

Returns:

InformationFunctionCategory.CATEGORY.