Examples of org.dmd.dmc.types.Modifier

org.dmd.dmc.types.Modifier
The Modifier type is used to represent modification operations on a DmcObject. Any modification to an object can be represented by a Modifier. Modifiers exist in two primary states, depending on how they are created. If the modification is created as a result of setting a DmcTypeModifier on a DmcObject and applying a series of changes, the modification is (at least partially) resolved. If the changes take place on a client, the changes are partially resolved e.g. references to objects are not fully resolved. If the changes take place on the server, the modification should be fully resolved.
Modifiers that are parsed from an OIF or JSON formatted request are not resolved and must be resolved before they are applied to server side objects.

    
    @Override
    // org.dmd.dms.util.GenUtility.dumpMVType(GenUtility.java:2363)
    public Modifier add(Object v) throws DmcValueException {
        synchronized(this){
            Modifier rc = typeCheck(v);
            if (value == null)
                value = new ArrayList<Modifier>();
            value.add(rc);
            return(rc);
        }

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    public Modifier del(Object v){
        synchronized(this){
            if (value == null)
                return(null);
    
            Modifier key = null;
            Modifier rc = null;
            try {
                key = typeCheck(v);
            } catch (DmcValueException e) {
                throw(new IllegalStateException("Incompatible type passed to del():" + getName(),e));
            }

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                throw(new IllegalStateException("Attribute: " + getAttributeInfo().name + " is not indexed. You can't use setMVnth()."));
            
            if ( (index < 0) || (index >= getAttributeInfo().indexSize))
                throw(new IllegalStateException("Index " + index + " for attribute: " + getAttributeInfo().name + " is out of range: 0 <= index < " + getAttributeInfo().indexSize));
            
            Modifier rc = null;
            
            if (v != null)
                rc = typeCheck(v);
            
            if (value == null){

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        synchronized(this){
            if (value == null)
                return(false);


            try {
                Modifier val = typeCheck(v);
                return(value.contains(val));
            } catch (DmcValueException e) {
                return(false);
            }
        }

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        DmcTypeModifierMV newModifier = new DmcTypeModifierMV(MetaDMSAG.__modify);
        
        Iterator<Modifier>  modifiers = getModifyAttribute().getMV();
        if (modifiers != null){
          while(modifiers.hasNext()){
            Modifier mod = modifiers.next();
            DmcAttributeInfo ai = mod.getAttributeInfo();
            if (ai == null)
              throw(new IllegalStateException("Unknown attribute in modify: " + mod.getAttributeName()));
            if (ai.dataType == DataTypeEnum.PERSISTENT)
              newModifier.add(new Modifier(mod));
          }
          
          // If there are any PERSISTENT modifications, we'll returned an alterred clone
          if (newModifier.getMVSize() > 0){
            // There were non-persistent attributes in the modify, clone the event

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  DmcTypeModifierMV getModifierSlice(DmcSliceInfo slice, DmcTypeModifierMV source){
    DmcTypeModifierMV rc = new DmcTypeModifierMV();
    
    Iterator<Modifier> mods = source.getMV();
    while(mods.hasNext()){
      Modifier mod = mods.next();
      if (slice.contains(mod.getAttributeID())){
        try {
          rc.add(mod);
        } catch (DmcValueException e) {
          throw(new IllegalStateException("Should not throw an exception adding a Modifier to a DmcTypeModifier"));
        }

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  public boolean thisAttributeModified(DmcAttributeInfo ai){
    if (getEventTypeDMP() == DMPEventTypeEnum.MODIFIED){
      DmcTypeModifierMV mods = getModifyAttribute();
      if (mods != null){
        for(int i=0; i<mods.getMVSize(); i++){
          Modifier mod = mods.getMVnth(i);
          DmcAttributeInfo modai = mod.getAttributeInfo();
          if (modai == null)
            throw(new IllegalStateException("Couldn't get attriute info for: " + mod.getAttributeName()));
          if (modai.id == ai.id)
            return(true);
        }
      }
    }

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        throw(new IllegalStateException("Malformed DMPEvent. Missing modify attribute for a MODIFIED event."));
      
      Iterator<Modifier>  modifiers = getModifyAttribute().getMV();
      if (modifiers != null){
        while(modifiers.hasNext()){
          Modifier mod = modifiers.next();
          if (mod.getAttribute() == null){
            if (mod.getModifyType() == ModifyTypeEnum.REM){
              AttributeDefinition ad = DmwOmni.instance().getSchema().adef(mod.getAttributeName());
              if (ad == null)
                throw(new IllegalStateException("Malformed DMPEvent. Could not get definition for attribute: " + mod.getAttributeName()));
              else
                if (ad.getDataType() == DataTypeEnum.PERSISTENT){
                  rc = true;
                  break;
                }
            }
            else if (mod.getModifyType() == ModifyTypeEnum.NTH){
              AttributeDefinition ad = DmwOmni.instance().getSchema().adef(mod.getAttributeName());
              if (ad == null)
                throw(new IllegalStateException("Malformed DMPEvent. Could not get definition for attribute: " + mod.getAttributeName()));
              else
                if (ad.getDataType() == DataTypeEnum.PERSISTENT){
                  rc = true;
                  break;
                }
            }
            else
              throw(new IllegalStateException("Malformed DMPEvent. Missing attribute for a Modifier: " + mod.toString()));
          }
          else if (mod.getAttribute().getAttributeInfo().dataType == DataTypeEnum.PERSISTENT){
            rc = true;
            break;
          }
        }
      }

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    // as a single operation, thus we create a new DmcTypeModifierMV and add the single Modifier
    // to it. We don;t attempt to reuse the same modifier because these may be used in events.
    Iterator<Modifier> it = mods.getMV();
    while(it.hasNext()){
      DmcTypeModifierMV single = new DmcTypeModifierMV();
      Modifier mod = it.next();
      try {
        // Add the Modifier to our temporary
        single.add(mod);
        
        if (cache == null)
          ((DmcObject)mod.getReferringObject()).applyModifier(single);
        else
          cache.applyModification(mod.getReferringObject(), single);
        
      } catch (DmcValueException e) {
        throw(new IllegalStateException("Adding a prebuilt Modifier to a DmcTypeModifierMV shouldn't thrown an exception."));
      } catch (DmcValueExceptionSet e) {
        throw(new IllegalStateException("Removing a back reference shouldn't thrown an exception."));

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  protected void addModsSV(DmcTypeModifierMV mods, DmcAttribute<?> existingValue, DmcAdapterIF adapter){
    try {
      if (existingValue == null){
        if (adapter.hasValue())
          mods.add(new Modifier(ModifyTypeEnum.SET, this.cloneIt()));
      }
      else{
        if (!adapter.hasValue())
          mods.add(new Modifier(ModifyTypeEnum.REM, attrInfo));
        else
          mods.add(new Modifier(ModifyTypeEnum.SET, this.cloneIt()));
      }
    } catch (DmcValueException e) {
      throw(new IllegalStateException("Changes to the Modifier shouldn't throw an exception.", e));
    }
  }

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Related Classes of org.dmd.dmc.types.Modifier

org.dmd.dmc.DmcAttribute

org.dmd.dmc.DmcObject

org.dmd.dmc.DmcOmni

org.dmd.dmp.server.extended.DMPEvent

org.dmd.dms.generated.types.DmcTypeModifierMV

org.dmd.dms.generated.types.DmcTypeModifierSET

org.dmd.dms.generated.types.DmcTypeModifierSV

org.dmd.dmc.DmcValueException

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