Examples with IACursor org.apache.asterix.om.base.IACursor used on opensource projects

Example 6 with IACursor

use of org.apache.asterix.om.base.IACursor in project asterixdb by apache.

the class FunctionTupleTranslator method createFunctionFromARecord.

private Function createFunctionFromARecord(ARecord functionRecord) {
    String dataverseName = ((AString) functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_DATAVERSENAME_FIELD_INDEX)).getStringValue();
    String functionName = ((AString) functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTIONNAME_FIELD_INDEX)).getStringValue();
    String arity = ((AString) functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_ARITY_FIELD_INDEX)).getStringValue();
    IACursor cursor = ((AOrderedList) functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_PARAM_LIST_FIELD_INDEX)).getCursor();
    List<String> params = new ArrayList<>();
    while (cursor.next()) {
        params.add(((AString) cursor.get()).getStringValue());
    }
    String returnType = ((AString) functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_RETURN_TYPE_FIELD_INDEX)).getStringValue();
    String definition = ((AString) functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_DEFINITION_FIELD_INDEX)).getStringValue();
    String language = ((AString) functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_LANGUAGE_FIELD_INDEX)).getStringValue();
    String functionKind = ((AString) functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_KIND_FIELD_INDEX)).getStringValue();
    String referenceCount = ((AString) functionRecord.getValueByPos(MetadataRecordTypes.FUNCTION_ARECORD_FUNCTION_REFERENCE_COUNT_INDEX)).getStringValue();
    return new Function(dataverseName, functionName, Integer.parseInt(arity), params, returnType, definition, language, functionKind, Integer.parseInt(referenceCount));
}

Example 7 with IACursor

use of org.apache.asterix.om.base.IACursor in project asterixdb by apache.

the class FeedConnectionTupleTranslator method createFeedConnFromRecord.

private FeedConnection createFeedConnFromRecord(ARecord feedConnRecord) {
    String dataverseName = ((AString) feedConnRecord.getValueByPos(MetadataRecordTypes.FEED_CONN_DATAVERSE_NAME_FIELD_INDEX)).getStringValue();
    String feedName = ((AString) feedConnRecord.getValueByPos(MetadataRecordTypes.FEED_CONN_FEED_NAME_FIELD_INDEX)).getStringValue();
    String datasetName = ((AString) feedConnRecord.getValueByPos(MetadataRecordTypes.FEED_CONN_DATASET_NAME_FIELD_INDEX)).getStringValue();
    String outputType = ((AString) feedConnRecord.getValueByPos(MetadataRecordTypes.FEED_CONN_OUTPUT_TYPE_INDEX)).getStringValue();
    String policyName = ((AString) feedConnRecord.getValueByPos(MetadataRecordTypes.FEED_CONN_POLICY_FIELD_INDEX)).getStringValue();
    ArrayList<FunctionSignature> appliedFunctions = null;
    Object o = feedConnRecord.getValueByPos(MetadataRecordTypes.FEED_CONN_APPLIED_FUNCTIONS_FIELD_INDEX);
    IACursor cursor;
    if (!(o instanceof ANull) && !(o instanceof AMissing)) {
        appliedFunctions = new ArrayList<>();
        FunctionSignature functionSignature;
        cursor = ((AUnorderedList) feedConnRecord.getValueByPos(MetadataRecordTypes.FEED_CONN_APPLIED_FUNCTIONS_FIELD_INDEX)).getCursor();
        while (cursor.next()) {
            //TODO: allow different arity
            functionSignature = new FunctionSignature(dataverseName, ((AString) cursor.get()).getStringValue(), 1);
            appliedFunctions.add(functionSignature);
        }
    }
    return new FeedConnection(dataverseName, feedName, datasetName, appliedFunctions, policyName, outputType);
}

Example 8 with IACursor

use of org.apache.asterix.om.base.IACursor in project asterixdb by apache.

the class FeedPolicyTupleTranslator method createFeedPolicyFromARecord.

private FeedPolicyEntity createFeedPolicyFromARecord(ARecord feedPolicyRecord) {
    FeedPolicyEntity feedPolicy = null;
    String dataverseName = ((AString) feedPolicyRecord.getValueByPos(MetadataRecordTypes.FEED_POLICY_ARECORD_DATAVERSE_NAME_FIELD_INDEX)).getStringValue();
    String policyName = ((AString) feedPolicyRecord.getValueByPos(MetadataRecordTypes.FEED_POLICY_ARECORD_POLICY_NAME_FIELD_INDEX)).getStringValue();
    String description = ((AString) feedPolicyRecord.getValueByPos(MetadataRecordTypes.FEED_POLICY_ARECORD_DESCRIPTION_FIELD_INDEX)).getStringValue();
    IACursor cursor = ((AUnorderedList) feedPolicyRecord.getValueByPos(MetadataRecordTypes.FEED_POLICY_ARECORD_PROPERTIES_FIELD_INDEX)).getCursor();
    Map<String, String> policyParamters = new HashMap<>();
    String key;
    String value;
    while (cursor.next()) {
        ARecord field = (ARecord) cursor.get();
        key = ((AString) field.getValueByPos(MetadataRecordTypes.PROPERTIES_NAME_FIELD_INDEX)).getStringValue();
        value = ((AString) field.getValueByPos(MetadataRecordTypes.PROPERTIES_VALUE_FIELD_INDEX)).getStringValue();
        policyParamters.put(key, value);
    }
    feedPolicy = new FeedPolicyEntity(dataverseName, policyName, description, policyParamters);
    return feedPolicy;
}

Example 9 with IACursor

use of org.apache.asterix.om.base.IACursor in project asterixdb by apache.

the class AccessMethodUtils method checkFTSearchConstantExpression.

// Checks whether a proper constant expression is in place for the full-text search.
// A proper constant expression in the full-text search should be among string, string type (Un)ordered list.
public static void checkFTSearchConstantExpression(ILogicalExpression constExpression) throws AlgebricksException {
    IAObject objectFromExpr = ConstantExpressionUtil.getConstantIaObject(constExpression, null);
    String arg2Value;
    IACursor oListCursor;
    switch(objectFromExpr.getType().getTypeTag()) {
        case STRING:
            arg2Value = ConstantExpressionUtil.getStringConstant(objectFromExpr);
            checkAndGenerateFTSearchExceptionForStringPhrase(arg2Value);
            break;
        case ARRAY:
            oListCursor = ConstantExpressionUtil.getOrderedListConstant(objectFromExpr).getCursor();
            checkEachElementInFTSearchListPredicate(oListCursor);
            break;
        case MULTISET:
            oListCursor = ConstantExpressionUtil.getUnorderedListConstant(objectFromExpr).getCursor();
            checkEachElementInFTSearchListPredicate(oListCursor);
            break;
        default:
            throw new CompilationException(ErrorCode.COMPILATION_TYPE_UNSUPPORTED, BuiltinFunctions.FULLTEXT_CONTAINS.getName(), objectFromExpr.getType().getTypeTag());
    }
}

Example 10 with IACursor

use of org.apache.asterix.om.base.IACursor in project asterixdb by apache.

the class AUnorderedListSerializerDeserializer method serialize.

@SuppressWarnings("unchecked")
@Override
public void serialize(AUnorderedList instance, DataOutput out) throws HyracksDataException {
    // TODO: schemaless ordered list serializer
    UnorderedListBuilder listBuilder = new UnorderedListBuilder();
    ArrayBackedValueStorage itemValue = new ArrayBackedValueStorage();
    listBuilder.reset(unorderedlistType);
    IACursor cursor = instance.getCursor();
    while (cursor.next()) {
        itemValue.reset();
        serializer.serialize(cursor.get(), itemValue.getDataOutput());
        listBuilder.addItem(itemValue);
    }
    listBuilder.write(out, false);
}