in plugins/ldapbrowser.core/src/main/java/org/apache/directory/studio/ldapbrowser/core/utils/Utils.java [404:646]
public static LdifFile computeDiff( IEntry oldEntry, IEntry newEntry )
{
// get connection parameters
ModifyMode modifyMode = oldEntry.getBrowserConnection().getModifyMode();
ModifyMode modifyModeNoEMR = oldEntry.getBrowserConnection().getModifyModeNoEMR();
ModifyOrder modifyAddDeleteOrder = oldEntry.getBrowserConnection().getModifyAddDeleteOrder();
// get all attribute descriptions
Set<String> attributeDescriptions = new LinkedHashSet<>();
for ( IAttribute oldAttr : oldEntry.getAttributes() )
{
attributeDescriptions.add( oldAttr.getDescription() );
}
for ( IAttribute newAttr : newEntry.getAttributes() )
{
attributeDescriptions.add( newAttr.getDescription() );
}
// prepare the LDIF record containing the modifications
LdifChangeModifyRecord record = new LdifChangeModifyRecord( LdifDnLine.create( newEntry.getDn().getName() ) );
if ( newEntry.isReferral() )
{
record.addControl( LdifControlLine.create( StudioControl.MANAGEDSAIT_CONTROL.getOid(),
StudioControl.MANAGEDSAIT_CONTROL.isCritical(), StudioControl.MANAGEDSAIT_CONTROL.getControlValue() ) );
}
record.setChangeType( LdifChangeTypeLine.createModify() );
// check all the attributes
for ( String attributeDescription : attributeDescriptions )
{
// get attribute type schema information
Schema schema = oldEntry.getBrowserConnection().getSchema();
AttributeType atd = schema.getAttributeTypeDescription( attributeDescription );
boolean hasEMR = SchemaUtils.getEqualityMatchingRuleNameOrNumericOidTransitive( atd, schema ) != null;
boolean isReplaceForced = ( hasEMR && modifyMode == ModifyMode.REPLACE )
|| ( !hasEMR && modifyModeNoEMR == ModifyMode.REPLACE );
boolean isAddDelForced = ( hasEMR && modifyMode == ModifyMode.ADD_DELETE )
|| ( !hasEMR && modifyModeNoEMR == ModifyMode.ADD_DELETE );
boolean isOrderedValue = atd.getExtensions().containsKey( "X-ORDERED" ) //$NON-NLS-1$
&& atd.getExtensions().get( "X-ORDERED" ).contains( "VALUES" ); //$NON-NLS-1$ //$NON-NLS-2$
// get old an new values for comparison
IAttribute oldAttribute = oldEntry.getAttribute( attributeDescription );
Set<String> oldValues = new HashSet<>();
Map<String, LdifAttrValLine> oldAttrValLines = new LinkedHashMap<>();
if ( oldAttribute != null )
{
for ( IValue value : oldAttribute.getValues() )
{
LdifAttrValLine attrValLine = computeDiffCreateAttrValLine( value );
oldValues.add( attrValLine.getUnfoldedValue() );
oldAttrValLines.put( attrValLine.getUnfoldedValue(), attrValLine );
}
}
IAttribute newAttribute = newEntry.getAttribute( attributeDescription );
Set<String> newValues = new HashSet<>();
Map<String, LdifAttrValLine> newAttrValLines = new LinkedHashMap<>();
if ( newAttribute != null )
{
for ( IValue value : newAttribute.getValues() )
{
LdifAttrValLine attrValLine = computeDiffCreateAttrValLine( value );
newValues.add( attrValLine.getUnfoldedValue() );
newAttrValLines.put( attrValLine.getUnfoldedValue(), attrValLine );
}
}
// check what to do
if ( oldAttribute != null && newAttribute == null )
{
// attribute only exists in the old entry: delete all values
LdifModSpec modSpec;
if ( isReplaceForced )
{
// replace (empty value list)
modSpec = LdifModSpec.createReplace( attributeDescription );
}
else
// addDelForced or default
{
// delete all
modSpec = LdifModSpec.createDelete( attributeDescription );
for ( IValue value : oldAttribute.getValues() )
{
modSpec.addAttrVal( computeDiffCreateAttrValLine( value ) );
}
}
modSpec.finish( LdifModSpecSepLine.create() );
record.addModSpec( modSpec );
}
else if ( oldAttribute == null && newAttribute != null )
{
// attribute only exists in the new entry: add all values
LdifModSpec modSpec;
if ( isReplaceForced )
{
// replace (all values)
modSpec = LdifModSpec.createReplace( attributeDescription );
}
else
// addDelForced or default
{
// add (all new values)
modSpec = LdifModSpec.createAdd( attributeDescription );
}
for ( IValue value : newAttribute.getValues() )
{
modSpec.addAttrVal( computeDiffCreateAttrValLine( value ) );
}
modSpec.finish( LdifModSpecSepLine.create() );
record.addModSpec( modSpec );
}
else if ( oldAttribute != null && newAttribute != null && !oldValues.equals( newValues ) )
{
// attribute exists in both entries, check modifications
if ( isReplaceForced )
{
// replace (all new values)
LdifModSpec modSpec = LdifModSpec.createReplace( attributeDescription );
for ( IValue value : newAttribute.getValues() )
{
modSpec.addAttrVal( computeDiffCreateAttrValLine( value ) );
}
modSpec.finish( LdifModSpecSepLine.create() );
record.addModSpec( modSpec );
}
else
{
// compute diff
List<LdifAttrValLine> toDel = new ArrayList<>();
List<LdifAttrValLine> toAdd = new ArrayList<>();
for ( Map.Entry<String, LdifAttrValLine> entry : oldAttrValLines.entrySet() )
{
if ( !newValues.contains( entry.getKey() ) )
{
toDel.add( entry.getValue() );
}
}
for ( Map.Entry<String, LdifAttrValLine> entry : newAttrValLines.entrySet() )
{
if ( !oldValues.contains( entry.getKey() ) )
{
toAdd.add( entry.getValue() );
}
}
/*
* we use add/del in the following cases:
* - add/del is forced in the connection configuration
* - for attributes w/o X-ORDERED 'VALUES'
*
* we use replace in the following cases:
* - for attributes with X-ORDERED 'VALUES'
*/
if ( isAddDelForced || !isOrderedValue )
{
// add/del del/add
LdifModSpec addModSpec = LdifModSpec.createAdd( attributeDescription );
for ( LdifAttrValLine attrValLine : toAdd )
{
addModSpec.addAttrVal( attrValLine );
}
addModSpec.finish( LdifModSpecSepLine.create() );
LdifModSpec delModSpec = LdifModSpec.createDelete( attributeDescription );
for ( LdifAttrValLine attrValLine : toDel )
{
delModSpec.addAttrVal( attrValLine );
}
delModSpec.finish( LdifModSpecSepLine.create() );
if ( modifyAddDeleteOrder == ModifyOrder.DELETE_FIRST )
{
if ( delModSpec.getAttrVals().length > 0 )
{
record.addModSpec( delModSpec );
}
if ( addModSpec.getAttrVals().length > 0 )
{
record.addModSpec( addModSpec );
}
}
else
{
if ( addModSpec.getAttrVals().length > 0 )
{
record.addModSpec( addModSpec );
}
if ( delModSpec.getAttrVals().length > 0 )
{
record.addModSpec( delModSpec );
}
}
}
else
{
// replace (all new values)
LdifModSpec modSpec = LdifModSpec.createReplace( attributeDescription );
for ( LdifAttrValLine attrValLine : newAttrValLines.values() )
{
modSpec.addAttrVal( attrValLine );
}
modSpec.finish( LdifModSpecSepLine.create() );
record.addModSpec( modSpec );
}
}
}
}
record.finish( LdifSepLine.create() );
LdifFile model = new LdifFile();
if ( record.isValid() && record.getModSpecs().length > 0 )
{
model.addContainer( record );
}
return model.getRecords().length > 0 ? model : null;
}