Package org.jfree.report.expressions
Class FormulaExpression
- java.lang.Object
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- org.jfree.report.expressions.AbstractExpression
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- org.jfree.report.expressions.FormulaExpression
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
,Expression
public class FormulaExpression extends AbstractExpression
Creation-Date: 04.11.2006, 19:24:04- Author:
- Thomas Morgner
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description FormulaExpression()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
clone()
Clones the expression, expression should be reinitialized after the cloning.java.lang.Object
computeValue()
Return the current expression value.org.pentaho.reporting.libraries.formula.Formula
getCompiledFormula()
Returns the compiled formula.java.lang.String
getFormula()
java.lang.String
getFormulaExpression()
java.lang.String
getFormulaNamespace()
void
setFormula(java.lang.String formula)
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Methods inherited from class org.jfree.report.expressions.AbstractExpression
getDataRow, getInstance, getName, getParentLocale, getReportConfiguration, getResourceBundleFactory, getRuntime, isDeepTraversing, isPrecompute, isPreserve, setDeepTraversing, setName, setPrecompute, setPreserve, setRuntime
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Method Detail
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getFormula
public java.lang.String getFormula()
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getFormulaNamespace
public java.lang.String getFormulaNamespace()
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getFormulaExpression
public java.lang.String getFormulaExpression()
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setFormula
public void setFormula(java.lang.String formula)
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getCompiledFormula
public org.pentaho.reporting.libraries.formula.Formula getCompiledFormula() throws org.pentaho.reporting.libraries.formula.parser.ParseException
Returns the compiled formula. The formula is not connected to a formula context.- Returns:
- the formula.
- Throws:
org.pentaho.reporting.libraries.formula.parser.ParseException
- if the formula contains syntax errors.
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computeValue
public java.lang.Object computeValue() throws DataSourceException
Return the current expression value.The value depends (obviously) on the expression implementation.
- Returns:
- the value of the function.
- Throws:
DataSourceException
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clone
public java.lang.Object clone() throws java.lang.CloneNotSupportedException
Clones the expression, expression should be reinitialized after the cloning.Expression maintain no state, cloning is done at the beginning of the report processing to disconnect the used expression from any other object space.
- Specified by:
clone
in interfaceExpression
- Overrides:
clone
in classAbstractExpression
- Returns:
- A clone of this expression.
- Throws:
java.lang.CloneNotSupportedException
- this should never happen.
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