org.jfree.report.function
Class ColumnAggregationExpression

java.lang.Object
  |
  +--org.jfree.report.function.AbstractExpression
        |
        +--org.jfree.report.function.ColumnAggregationExpression

Direct Known Subclasses:

AndExpression, ColumnAverageExpression, ColumnDifferenceExpression, ColumnDivisionExpression, ColumnMaximumExpression, ColumnMinimumExpression, ColumnMultiplyExpression, ColumnSumExpression, OrExpression

public abstract class ColumnAggregationExpression

extends AbstractExpression

Creation-Date: 04.01.2006, 17:23:01

Author:

Thomas Morgner

See Also:

Serialized Form

Constructor Summary

protected

ColumnAggregationExpression()

Method Summary

java.lang.Object	clone() Clones the expression.
java.lang.String[]	getField()
java.lang.String	getField(int index)
int	getFieldCount()
protected java.lang.Object[]	getFieldValues() collects the values of all fields defined in the fieldList.
void	setField(int index, java.lang.String field)
void	setField(java.lang.String[] fields)

Methods inherited from class org.jfree.report.function.AbstractExpression

getDataRow, getDependencyLevel, getInstance, getName, getReportConfiguration, getResourceBundleFactory, getRuntime, isActive, setActive, setDependencyLevel, setName, setRuntime

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnAggregationExpression

protected ColumnAggregationExpression()

Method Detail

getFieldValues

protected java.lang.Object[] getFieldValues()

collects the values of all fields defined in the fieldList.

Returns:

an Objectarray containing all defined values from the datarow

setField

public void setField(int index,
                     java.lang.String field)

getField

public java.lang.String getField(int index)

getFieldCount

public int getFieldCount()

getField

public java.lang.String[] getField()

setField

public void setField(java.lang.String[] fields)

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Description copied from class: AbstractExpression

Clones the expression. The expression should be reinitialized after the cloning.

Expressions maintain no state, cloning is done at the beginning of the report processing to disconnect the expression from any other object space.

Overrides:

clone in class AbstractExpression

Tags copied from class: AbstractExpression

Returns:

a clone of this expression.

Throws:

java.lang.CloneNotSupportedException - this should never happen.