Java Doc for AverageExpression.java in  » Report » pentaho-report » org » jfree » report » function » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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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.AverageExpression

AverageExpression
public class AverageExpression extends AbstractExpression (Code)
An expression that takes values from one or more fields and returns the average of them.
author:
   Thomas Morgner



Constructor Summary
public  AverageExpression()
     Creates a new expression.

Method Summary
public  String[]getField()
     Returns the defined fields as array.
public  StringgetField(int index)
     Returns the defined field at the given index-position.
Parameters:
  index - the position of the field name that should be queried.
public  intgetFieldCount()
     Returns the number of fields defined in this expression.
public  ExpressiongetInstance()
     Clones the expression.
public  intgetRoundingMode()
     Returns the defined rounding mode.
public  intgetScale()
     Returns the scale for the divide-operation.
public  ObjectgetValue()
     Returns the average of the values.
public  voidsetField(String[] fields)
     Defines all fields as array.
public  voidsetField(int index, String field)
     Defines the field in the field-list at the given index.
public  voidsetRoundingMode(int roundingMode)
     Defines the rounding mode.
public  voidsetScale(int scale)
     Defines the scale for the divide-operation.


Constructor Detail
AverageExpression
public AverageExpression()(Code)
Creates a new expression. The fields used by the expression are defined using properties named '0', '1', ... 'N'. These fields should contain Number instances.




Method Detail
getField
public String[] getField()(Code)
Returns the defined fields as array. the fields



getField
public String getField(int index)(Code)
Returns the defined field at the given index-position.
Parameters:
  index - the position of the field name that should be queried. the field name at the given position.



getFieldCount
public int getFieldCount()(Code)
Returns the number of fields defined in this expression. the number of fields.



getInstance
public Expression getInstance()(Code)
Clones the expression. A copy of this expression.



getRoundingMode
public int getRoundingMode()(Code)
Returns the defined rounding mode. This influences the precision of the divide-operation. the rounding mode.
See Also:   java.math.BigDecimal.divide(java.math.BigDecimalint)



getScale
public int getScale()(Code)
Returns the scale for the divide-operation. The scale influences the precision of the division. the scale.



getValue
public Object getValue()(Code)
Returns the average of the values. a BigDecimal instance.



setField
public void setField(String[] fields)(Code)
Defines all fields as array. This completely replaces any previously defined fields.
Parameters:
  fields - the new list of fields.



setField
public void setField(int index, String field)(Code)
Defines the field in the field-list at the given index.
Parameters:
  index - the position in the list, where the field should be defined.
Parameters:
  field - the name of the field.



setRoundingMode
public void setRoundingMode(int roundingMode)(Code)
Defines the rounding mode. This influences the precision of the divide-operation.
Parameters:
  roundingMode - the rounding mode.
See Also:   java.math.BigDecimal.divide(java.math.BigDecimalint)



setScale
public void setScale(int scale)(Code)
Defines the scale for the divide-operation. The scale influences the precision of the division.
Parameters:
  scale - the scale.



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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