Examples with IDataType org.apache.atlas.typesystem.types.IDataType used on opensource projects

Example 1 with IDataType

use of org.apache.atlas.typesystem.types.IDataType in project incubator-atlas by apache.

the class DeleteHandler method deleteTypeVertex.

/**
     * Deleting any type vertex. Goes over the complex attributes and removes the references
     * @param instanceVertex
     * @throws AtlasException
     */
protected void deleteTypeVertex(AtlasVertex instanceVertex, boolean force) throws AtlasException {
    if (LOG.isDebugEnabled()) {
        LOG.debug("Deleting {}", string(instanceVertex));
    }
    String typeName = GraphHelper.getTypeName(instanceVertex);
    IDataType type = typeSystem.getDataType(IDataType.class, typeName);
    FieldMapping fieldMapping = getFieldMapping(type);
    for (AttributeInfo attributeInfo : fieldMapping.fields.values()) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Deleting attribute {} for {}", attributeInfo.name, string(instanceVertex));
        }
        String edgeLabel = GraphHelper.getEdgeLabel(type, attributeInfo);
        switch(attributeInfo.dataType().getTypeCategory()) {
            case CLASS:
                //If its class attribute, delete the reference
                deleteEdgeReference(instanceVertex, edgeLabel, DataTypes.TypeCategory.CLASS, attributeInfo.isComposite);
                break;
            case STRUCT:
                //If its struct attribute, delete the reference
                deleteEdgeReference(instanceVertex, edgeLabel, DataTypes.TypeCategory.STRUCT, false);
                break;
            case ARRAY:
                //For array attribute, if the element is struct/class, delete all the references
                IDataType elementType = ((DataTypes.ArrayType) attributeInfo.dataType()).getElemType();
                DataTypes.TypeCategory elementTypeCategory = elementType.getTypeCategory();
                if (elementTypeCategory == DataTypes.TypeCategory.STRUCT || elementTypeCategory == DataTypes.TypeCategory.CLASS) {
                    Iterator<AtlasEdge> edges = graphHelper.getOutGoingEdgesByLabel(instanceVertex, edgeLabel);
                    if (edges != null) {
                        while (edges.hasNext()) {
                            AtlasEdge edge = edges.next();
                            deleteEdgeReference(edge, elementType.getTypeCategory(), attributeInfo.isComposite, false);
                        }
                    }
                }
                break;
            case MAP:
                //For map attribute, if the value type is struct/class, delete all the references
                DataTypes.MapType mapType = (DataTypes.MapType) attributeInfo.dataType();
                DataTypes.TypeCategory valueTypeCategory = mapType.getValueType().getTypeCategory();
                String propertyName = GraphHelper.getQualifiedFieldName(type, attributeInfo.name);
                if (valueTypeCategory == DataTypes.TypeCategory.STRUCT || valueTypeCategory == DataTypes.TypeCategory.CLASS) {
                    List<String> keys = GraphHelper.getListProperty(instanceVertex, propertyName);
                    if (keys != null) {
                        for (String key : keys) {
                            String mapEdgeLabel = GraphHelper.getQualifiedNameForMapKey(edgeLabel, key);
                            deleteEdgeReference(instanceVertex, mapEdgeLabel, valueTypeCategory, attributeInfo.isComposite);
                        }
                    }
                }
        }
    }
    deleteVertex(instanceVertex, force);
}

Example 2 with IDataType

use of org.apache.atlas.typesystem.types.IDataType in project incubator-atlas by apache.

the class DeleteHandler method deleteEdgeBetweenVertices.

/**
     * Deletes the edge between outvertex and inVertex. The edge is for attribute attributeName of outVertex
     * @param outVertex
     * @param inVertex
     * @param attributeName
     * @throws AtlasException
     */
protected void deleteEdgeBetweenVertices(AtlasVertex outVertex, AtlasVertex inVertex, String attributeName) throws AtlasException {
    if (LOG.isDebugEnabled()) {
        LOG.debug("Removing edge from {} to {} with attribute name {}", string(outVertex), string(inVertex), attributeName);
    }
    String typeName = GraphHelper.getTypeName(outVertex);
    String outId = GraphHelper.getGuid(outVertex);
    Id.EntityState state = GraphHelper.getState(outVertex);
    if ((outId != null && RequestContext.get().isDeletedEntity(outId)) || state == Id.EntityState.DELETED) {
        //If the reference vertex is marked for deletion, skip updating the reference
        return;
    }
    IDataType type = typeSystem.getDataType(IDataType.class, typeName);
    AttributeInfo attributeInfo = getFieldMapping(type).fields.get(attributeName);
    String propertyName = GraphHelper.getQualifiedFieldName(type, attributeName);
    String edgeLabel = EDGE_LABEL_PREFIX + propertyName;
    AtlasEdge edge = null;
    switch(attributeInfo.dataType().getTypeCategory()) {
        case CLASS:
            //If its class attribute, its the only edge between two vertices
            if (attributeInfo.multiplicity.nullAllowed()) {
                edge = graphHelper.getEdgeForLabel(outVertex, edgeLabel);
                if (shouldUpdateReverseAttribute) {
                    GraphHelper.setProperty(outVertex, propertyName, null);
                }
            } else {
                // Cannot unset a required attribute.
                throw new NullRequiredAttributeException("Cannot unset required attribute " + GraphHelper.getQualifiedFieldName(type, attributeName) + " on " + GraphHelper.getVertexDetails(outVertex) + " edge = " + edgeLabel);
            }
            break;
        case ARRAY:
            //If its array attribute, find the right edge between the two vertices and update array property
            List<String> elements = GraphHelper.getListProperty(outVertex, propertyName);
            if (elements != null) {
                //Make a copy, else list.remove reflects on titan.getProperty()
                elements = new ArrayList<>(elements);
                for (String elementEdgeId : elements) {
                    AtlasEdge elementEdge = graphHelper.getEdgeByEdgeId(outVertex, edgeLabel, elementEdgeId);
                    if (elementEdge == null) {
                        continue;
                    }
                    AtlasVertex elementVertex = elementEdge.getInVertex();
                    if (elementVertex.equals(inVertex)) {
                        edge = elementEdge;
                        //TODO element.size includes deleted items as well. should exclude
                        if (!attributeInfo.multiplicity.nullAllowed() && elements.size() <= attributeInfo.multiplicity.lower) {
                            // Deleting this edge would violate the attribute's lower bound.
                            throw new NullRequiredAttributeException("Cannot remove array element from required attribute " + GraphHelper.getQualifiedFieldName(type, attributeName) + " on " + GraphHelper.getVertexDetails(outVertex) + " " + GraphHelper.getEdgeDetails(elementEdge));
                        }
                        if (shouldUpdateReverseAttribute) {
                            //but when column is deleted, table will not reference the deleted column
                            if (LOG.isDebugEnabled()) {
                                LOG.debug("Removing edge {} from the array attribute {}", string(elementEdge), attributeName);
                            }
                            // Remove all occurrences of the edge ID from the list.
                            // This prevents dangling edge IDs (i.e. edge IDs for deleted edges)
                            // from the remaining in the list if there are duplicates.
                            elements.removeAll(Collections.singletonList(elementEdge.getId().toString()));
                            GraphHelper.setProperty(outVertex, propertyName, elements);
                            break;
                        }
                    }
                }
            }
            break;
        case MAP:
            //If its map attribute, find the right edge between two vertices and update map property
            List<String> keys = GraphHelper.getListProperty(outVertex, propertyName);
            if (keys != null) {
                //Make a copy, else list.remove reflects on titan.getProperty()
                keys = new ArrayList<>(keys);
                for (String key : keys) {
                    String keyPropertyName = GraphHelper.getQualifiedNameForMapKey(propertyName, key);
                    String mapEdgeId = GraphHelper.getSingleValuedProperty(outVertex, keyPropertyName, String.class);
                    AtlasEdge mapEdge = graphHelper.getEdgeByEdgeId(outVertex, keyPropertyName, mapEdgeId);
                    if (mapEdge != null) {
                        AtlasVertex mapVertex = mapEdge.getInVertex();
                        if (mapVertex.getId().toString().equals(inVertex.getId().toString())) {
                            //TODO keys.size includes deleted items as well. should exclude
                            if (attributeInfo.multiplicity.nullAllowed() || keys.size() > attributeInfo.multiplicity.lower) {
                                edge = mapEdge;
                            } else {
                                // Deleting this entry would violate the attribute's lower bound.
                                throw new NullRequiredAttributeException("Cannot remove map entry " + keyPropertyName + " from required attribute " + GraphHelper.getQualifiedFieldName(type, attributeName) + " on " + GraphHelper.getVertexDetails(outVertex) + " " + GraphHelper.getEdgeDetails(mapEdge));
                            }
                            if (shouldUpdateReverseAttribute) {
                                //remove this key
                                if (LOG.isDebugEnabled()) {
                                    LOG.debug("Removing edge {}, key {} from the map attribute {}", string(mapEdge), key, attributeName);
                                }
                                keys.remove(key);
                                GraphHelper.setProperty(outVertex, propertyName, keys);
                                GraphHelper.setProperty(outVertex, keyPropertyName, null);
                            }
                            break;
                        }
                    }
                }
            }
            break;
        case STRUCT:
        case TRAIT:
            break;
        default:
            throw new IllegalStateException("There can't be an edge from " + GraphHelper.getVertexDetails(outVertex) + " to " + GraphHelper.getVertexDetails(inVertex) + " with attribute name " + attributeName + " which is not class/array/map attribute");
    }
    if (edge != null) {
        deleteEdge(edge, false);
        RequestContext requestContext = RequestContext.get();
        GraphHelper.setProperty(outVertex, Constants.MODIFICATION_TIMESTAMP_PROPERTY_KEY, requestContext.getRequestTime());
        GraphHelper.setProperty(outVertex, Constants.MODIFIED_BY_KEY, requestContext.getUser());
        requestContext.recordEntityUpdate(outId);
    }
}

Example 3 with IDataType

use of org.apache.atlas.typesystem.types.IDataType in project incubator-atlas by apache.

the class FullTextMapper method forAttribute.

private String forAttribute(IDataType type, Object value, boolean followReferences) throws AtlasException {
    if (value == null) {
        return null;
    }
    switch(type.getTypeCategory()) {
        case PRIMITIVE:
            return String.valueOf(value);
        case ENUM:
            return ((EnumValue) value).value;
        case ARRAY:
            StringBuilder fullText = new StringBuilder();
            IDataType elemType = ((DataTypes.ArrayType) type).getElemType();
            List list = (List) value;
            for (Object element : list) {
                String elemFullText = forAttribute(elemType, element, false);
                if (StringUtils.isNotEmpty(elemFullText)) {
                    fullText = fullText.append(FULL_TEXT_DELIMITER).append(elemFullText);
                }
            }
            return fullText.toString();
        case MAP:
            fullText = new StringBuilder();
            IDataType keyType = ((DataTypes.MapType) type).getKeyType();
            IDataType valueType = ((DataTypes.MapType) type).getValueType();
            Map map = (Map) value;
            for (Object entryObj : map.entrySet()) {
                Map.Entry entry = (Map.Entry) entryObj;
                String keyFullText = forAttribute(keyType, entry.getKey(), false);
                if (StringUtils.isNotEmpty(keyFullText)) {
                    fullText = fullText.append(FULL_TEXT_DELIMITER).append(keyFullText);
                }
                String valueFullText = forAttribute(valueType, entry.getValue(), false);
                if (StringUtils.isNotEmpty(valueFullText)) {
                    fullText = fullText.append(FULL_TEXT_DELIMITER).append(valueFullText);
                }
            }
            return fullText.toString();
        case CLASS:
            if (followReferences) {
                Id refId = ((ITypedReferenceableInstance) value).getId();
                String refGuid = refId._getId();
                AtlasVertex refVertex = typedInstanceToGraphMapper.lookupVertex(refId);
                if (refVertex == null) {
                    refVertex = graphHelper.getVertexForGUID(refGuid);
                }
                return mapRecursive(refVertex, false);
            }
            break;
        case STRUCT:
            if (followReferences) {
                return forInstance((ITypedInstance) value, true);
            }
            break;
        default:
            throw new IllegalStateException("Unhandled type category " + type.getTypeCategory());
    }
    return null;
}

Example 4 with IDataType

use of org.apache.atlas.typesystem.types.IDataType in project incubator-atlas by apache.

the class GraphBackedSearchIndexer method onAdd.

/**
     * This is upon adding a new type to Store.
     *
     * @param dataTypes data type
     * @throws AtlasException
     */
@Override
public void onAdd(Collection<? extends IDataType> dataTypes) throws AtlasException {
    AtlasGraphManagement management = provider.get().getManagementSystem();
    for (IDataType dataType : dataTypes) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Creating indexes for type name={}, definition={}", dataType.getName(), dataType.getClass());
        }
        try {
            addIndexForType(management, dataType);
            LOG.info("Index creation for type {} complete", dataType.getName());
        } catch (Throwable throwable) {
            LOG.error("Error creating index for type {}", dataType, throwable);
            //Rollback indexes if any failure
            rollback(management);
            throw new IndexCreationException("Error while creating index for type " + dataType, throwable);
        }
    }
    //Commit indexes
    commit(management);
}

Example 5 with IDataType

use of org.apache.atlas.typesystem.types.IDataType in project incubator-atlas by apache.

the class Gremlin3ExpressionFactory method generateHasExpression.

@Override
public GroovyExpression generateHasExpression(GraphPersistenceStrategies s, GroovyExpression parent, String propertyName, String symbol, GroovyExpression requiredValue, FieldInfo fInfo) throws AtlasException {
    AttributeInfo attrInfo = fInfo.attrInfo();
    IDataType attrType = attrInfo.dataType();
    GroovyExpression propertNameExpr = new LiteralExpression(propertyName);
    if (s.isPropertyValueConversionNeeded(attrType)) {
        // for some types, the logical value cannot be stored directly in
        // the underlying graph,
        // and conversion logic is needed to convert the persistent form of
        // the value
        // to the actual value. In cases like this, we generate a conversion
        // expression to
        // do this conversion and use the filter step to perform the
        // comparsion in the gremlin query
        GroovyExpression itExpr = getItVariable();
        GroovyExpression vertexExpr = new CastExpression(new FunctionCallExpression(itExpr, GET_METHOD), VERTEX_CLASS);
        GroovyExpression propertyValueExpr = new FunctionCallExpression(vertexExpr, VALUE_METHOD, propertNameExpr);
        GroovyExpression conversionExpr = s.generatePersisentToLogicalConversionExpression(propertyValueExpr, attrType);
        GroovyExpression propertyIsPresentExpression = new FunctionCallExpression(new FunctionCallExpression(vertexExpr, PROPERTY_METHOD, propertNameExpr), IS_PRESENT_METHOD);
        GroovyExpression valueMatchesExpr = new ComparisonExpression(conversionExpr, getGroovyOperator(symbol), requiredValue);
        GroovyExpression filterCondition = new LogicalExpression(propertyIsPresentExpression, LogicalOperator.AND, valueMatchesExpr);
        GroovyExpression filterFunction = new ClosureExpression(filterCondition);
        return new FunctionCallExpression(TraversalStepType.FILTER, parent, FILTER_METHOD, filterFunction);
    } else {
        GroovyExpression valueMatches = new FunctionCallExpression(getComparisonFunction(symbol), requiredValue);
        return new FunctionCallExpression(TraversalStepType.FILTER, parent, HAS_METHOD, propertNameExpr, valueMatches);
    }
}