ar.com.epere4.java2excel.parser.impl
Class PropertyDtdStaticImpl

java.lang.Object
  ar.com.epere4.java2excel.parser.impl.AbstractPropertyDtd
      ar.com.epere4.java2excel.parser.impl.PropertyDtdStaticImpl

All Implemented Interfaces:

PropertyDtd

public class PropertyDtdStaticImpl
extends AbstractPropertyDtd

Implementation of PropertyDtd that returns a constant value with evaluateExpression(Object).

Instances of this class are intended to be used to display values that has to be all the same but are not present as a property in the collection. Objects like this must be added manualy by you using the method BodyDtd.addProperty(PropertyDtd).

The result of using this is a column with all values equals to each other. This may seem useless (Hey, what's the point of having a constant column??), but some people find useful to copy data from different generated Excel files and join them in a single file. Different files may have different values in these constant columns, so they can use autofilters with them.

Since:

09/03/2006

Author:

epere4

Constructor Summary

PropertyDtdStaticImpl()
Default constructor.

PropertyDtdStaticImpl(java.lang.String expression, java.lang.Object value)

PropertyDtdStaticImpl(java.lang.String expression, java.lang.String title, java.lang.Object value)

Method Summary

java.lang.Object	evaluateExpression(java.lang.Object element) Evaluates the ognl expression against the suplied element. This implementation just returs getValue().
java.lang.Object	getValue()
void	setValue(java.lang.Object value)

Methods inherited from class ar.com.epere4.java2excel.parser.impl.AbstractPropertyDtd

getDescription, getExpression, getTitle, isProtectNullPointer, setDescription, setExpression, setProtectNullPointer, setTitle, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyDtdStaticImpl

public PropertyDtdStaticImpl()

Default constructor.

Since:

09/03/2006

PropertyDtdStaticImpl

public PropertyDtdStaticImpl(java.lang.String expression,
                             java.lang.Object value)

Parameters:

expression - default value for getExpression(). Cannot be null, because it is used as a key.

value - default value for getValue().

Since:

09/03/2006

PropertyDtdStaticImpl

public PropertyDtdStaticImpl(java.lang.String expression,
                             java.lang.String title,
                             java.lang.Object value)

Parameters:

expression - default value for getExpression(). Cannot be null, because it is used as a key.

title - default value for getTitle().

value - default value for getValue().

Since:

09/03/2006

Method Detail

getValue

public java.lang.Object getValue()

Returns:

Returns the value.

Since:

09/03/2006

setValue

public void setValue(java.lang.Object value)

Parameters:

value - The value to set.

Since:

09/03/2006

evaluateExpression

public java.lang.Object evaluateExpression(java.lang.Object element)
                                    throws ognl.OgnlException

Evaluates the ognl expression against the suplied element. This implementation just returs getValue().

Parameters:

element - the element which is going to be target for the ognl expression.

Returns:

the result of the evaluation

Throws:

ognl.OgnlException - if the is an exception while evaluating ognl.

Since:

09/03/2006

See Also:

evaluateExpression(java.lang.Object)