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AbstractDataContentHandler.javaAPI DocApache James 2.3.14266Fri Jan 12 12:56:34 GMT 2007org.apache.james.util.mail.handlers

AbstractDataContentHandler

public abstract class AbstractDataContentHandler extends Object implements DataContentHandler
Abstract class providing common Data Handler behavior.

Fields Summary
private ActivationDataFlavor
fieldDataFlavor
Constructors Summary
public AbstractDataContentHandler()
Default Constructor

        super();
Methods Summary
protected abstract java.lang.ObjectcomputeContent(javax.activation.DataSource aDataSource)
Compute the content from aDataSource.

param
aDataSource
return
new Content built from the DataSource
throws
MessagingException

protected abstract javax.activation.ActivationDataFlavorcomputeDataFlavor()
Compute an ActivationDataFlavor.
return
A new ActivationDataFlavor
public java.lang.ObjectgetContent(javax.activation.DataSource aDataSource)
see
javax.activation.DataContentHandler#getContent(javax.activation.DataSource)
        Object content = null;
        try
        {
            content = computeContent(aDataSource);
        }
        catch (MessagingException e)
        {
            // No-op
        }
        return content;
    
protected javax.activation.ActivationDataFlavorgetDataFlavor()
Get the DataFlavor, lazily initialised if required.
return
Returns the dataFlavor, lazily initialised.
        ActivationDataFlavor dataFlavor = null;
        if (null == (dataFlavor = getDataFlavorBasic()))
        {
            updateDataFlavor();
            return getDataFlavor();
        }
        return dataFlavor;
    
private javax.activation.ActivationDataFlavorgetDataFlavorBasic()
Get the DataFlavor.
return
Returns the dataFlavor.
        return fieldDataFlavor;
    
public java.lang.ObjectgetTransferData(java.awt.datatransfer.DataFlavor aDataFlavor, javax.activation.DataSource aDataSource)
see
javax.activation.DataContentHandler#getTransferData(java.awt.datatransfer.DataFlavor,
javax.activation.DataSource)
        Object content = null;
        if (getDataFlavor().equals(aDataFlavor))
            content = getContent(aDataSource);
        return content;
    
public java.awt.datatransfer.DataFlavor[]getTransferDataFlavors()
see
javax.activation.DataContentHandler#getTransferDataFlavors()
        return new DataFlavor[]{getDataFlavor()};
    
protected voidsetDataFlavor(javax.activation.ActivationDataFlavor aDataFlavor)
        fieldDataFlavor = aDataFlavor;
    
protected voidupdateDataFlavor()
Update the current DataFlavor.
        setDataFlavor(computeDataFlavor());