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Java Source Code / Java Documentation » Report » pentaho report » org.jfree.report.function

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

org.jfree.report.function .AbstractExpression

org.jfree.report.function .AbstractFunction

org.jfree.report.function .TotalItemMinFunction

TotalItemMinFunction

public class TotalItemMinFunction extends AbstractFunction (Code)

A report function that pre-computes the smallest item in a group. The Items must be mutually comparable among each other or the function will fail. Comparing dates with strings will not work.

Like all Total-Functions, this function produces a precomputed grand total. The function's result is precomputed once and will not change later. Printing the result of this function in a group header returns the same value as printed in the group-footer.

The ItemMinFunction can be used to produce a running minimum for a group or report.

A group can be defined using the property "group". If the group property is not set, the function will process the whole report.
author:
Thomas Morgner

Constructor Summary
public	TotalItemMinFunction() Default constructor.

Method Summary
public String	getField() Returns the field used by the function.
public String	getGroup() Returns the name of the group for which the minimum should be computed.
public Expression	getInstance() Return a completly separated copy of this function.
public Object	getValue() Returns the computed minimum value.
public void	groupStarted(ReportEvent event) Receives notification that a group has started.
public void	itemsAdvanced(ReportEvent event) Receives notification that a row of data is being processed.
public void	reportInitialized(ReportEvent event) Receives notification that the report has started.
public void	setField(String field) Sets the field name for the function.
public void	setGroup(String group) Defines the name of the group to be totalled.

Constructor Detail

TotalItemMinFunction
public TotalItemMinFunction()(Code)
	Default constructor.

Method Detail

getField
public String getField()(Code)
	Returns the field used by the function. The field name corresponds to a column name in the report's data-row. The field name.

getGroup
public String getGroup()(Code)
	Returns the name of the group for which the minimum should be computed. the group name.

getInstance
public Expression getInstance()(Code)
	Return a completly separated copy of this function. The copy does no longer share any changeable objects with the original function. a copy of this function.

getValue
public Object getValue()(Code)
	Returns the computed minimum value. The computed minimum value.

groupStarted
public void groupStarted(ReportEvent event)(Code)
	Receives notification that a group has started. Parameters: event - the event.

itemsAdvanced
public void itemsAdvanced(ReportEvent event)(Code)
	Receives notification that a row of data is being processed. Parameters: event - the event.

reportInitialized
public void reportInitialized(ReportEvent event)(Code)
	Receives notification that the report has started. Parameters: event - the event.

setField
public void setField(String field)(Code)
	Sets the field name for the function. The field name corresponds to a column name in the report's data-row. Parameters: field - the field name.

setGroup
public void setGroup(String group)(Code)
	Defines the name of the group to be totalled. If the name is null, the minimum for the whole report is computed. Parameters: group - the group name.

Methods inherited from org.jfree.report.function.AbstractFunction

public void groupFinished(ReportEvent event)(Code)(Java Doc)
public void groupStarted(ReportEvent event)(Code)(Java Doc)
public void itemsAdvanced(ReportEvent event)(Code)(Java Doc)
public void itemsFinished(ReportEvent event)(Code)(Java Doc)
public void itemsStarted(ReportEvent event)(Code)(Java Doc)
public void reportDone(ReportEvent event)(Code)(Java Doc)
public void reportFinished(ReportEvent event)(Code)(Java Doc)
public void reportInitialized(ReportEvent event)(Code)(Java Doc)
public void reportStarted(ReportEvent event)(Code)(Java Doc)

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

public Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public DataRow getDataRow()(Code)(Java Doc)
public int getDependencyLevel()(Code)(Java Doc)
public Expression getInstance()(Code)(Java Doc)
public String getName()(Code)(Java Doc)
public Configuration getReportConfiguration()(Code)(Java Doc)
public ResourceBundleFactory getResourceBundleFactory()(Code)(Java Doc)
public ExpressionRuntime getRuntime()(Code)(Java Doc)
final public boolean isActive()(Code)(Java Doc)
public boolean isDeepTraversing()(Code)(Java Doc)
public boolean isPreserve()(Code)(Java Doc)
final public void setActive(boolean active)(Code)(Java Doc)
public void setDependencyLevel(int level)(Code)(Java Doc)
public void setName(String name)(Code)(Java Doc)
public void setPreserve(boolean preserve)(Code)(Java Doc)
public void setRuntime(ExpressionRuntime runtime)(Code)(Java Doc)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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