Examples with BinaryTokenizerOperatorDescriptor org.apache.hyracks.storage.am.lsm.invertedindex.dataflow.BinaryTokenizerOperatorDescriptor used on opensource projects

Example 1 with BinaryTokenizerOperatorDescriptor

use of org.apache.hyracks.storage.am.lsm.invertedindex.dataflow.BinaryTokenizerOperatorDescriptor in project asterixdb by apache.

the class SecondaryInvertedIndexOperationsHelper method createTokenizerOp.

private AbstractOperatorDescriptor createTokenizerOp(JobSpecification spec) throws AlgebricksException {
    int docField = 0;
    int numSecondaryKeys = index.getKeyFieldNames().size();
    int[] primaryKeyFields = new int[numPrimaryKeys + numFilterFields];
    for (int i = 0; i < primaryKeyFields.length; i++) {
        primaryKeyFields[i] = numSecondaryKeys + i;
    }
    BinaryTokenizerOperatorDescriptor tokenizerOp = new BinaryTokenizerOperatorDescriptor(spec, tokenKeyPairRecDesc, tokenizerFactory, docField, primaryKeyFields, isPartitioned, false);
    AlgebricksPartitionConstraintHelper.setPartitionConstraintInJobSpec(spec, tokenizerOp, primaryPartitionConstraint);
    return tokenizerOp;
}

Example 2 with BinaryTokenizerOperatorDescriptor

use of org.apache.hyracks.storage.am.lsm.invertedindex.dataflow.BinaryTokenizerOperatorDescriptor in project asterixdb by apache.

the class MetadataProvider method getBinaryTokenizerRuntime.

// Get a Tokenizer for the bulk-loading data into a n-gram or keyword index.
private Pair<IOperatorDescriptor, AlgebricksPartitionConstraint> getBinaryTokenizerRuntime(String dataverseName, String datasetName, String indexName, IOperatorSchema inputSchema, IOperatorSchema propagatedSchema, List<LogicalVariable> primaryKeys, List<LogicalVariable> secondaryKeys, RecordDescriptor recordDesc, JobSpecification spec, IndexType indexType) throws AlgebricksException {
    // Sanity checks.
    if (primaryKeys.size() > 1) {
        throw new AlgebricksException("Cannot tokenize composite primary key.");
    }
    if (secondaryKeys.size() > 1) {
        throw new AlgebricksException("Cannot tokenize composite secondary key fields.");
    }
    boolean isPartitioned;
    if (indexType == IndexType.LENGTH_PARTITIONED_WORD_INVIX || indexType == IndexType.LENGTH_PARTITIONED_NGRAM_INVIX) {
        isPartitioned = true;
    } else {
        isPartitioned = false;
    }
    // Number of Keys that needs to be propagated
    int numKeys = inputSchema.getSize();
    // Get the rest of Logical Variables that are not (PK or SK) and each
    // variable's positions.
    // These variables will be propagated through TokenizeOperator.
    List<LogicalVariable> otherKeys = new ArrayList<>();
    if (inputSchema.getSize() > 0) {
        for (int k = 0; k < inputSchema.getSize(); k++) {
            boolean found = false;
            for (LogicalVariable varKey : primaryKeys) {
                if (varKey.equals(inputSchema.getVariable(k))) {
                    found = true;
                    break;
                } else {
                    found = false;
                }
            }
            if (!found) {
                for (LogicalVariable varKey : secondaryKeys) {
                    if (varKey.equals(inputSchema.getVariable(k))) {
                        found = true;
                        break;
                    } else {
                        found = false;
                    }
                }
            }
            if (!found) {
                otherKeys.add(inputSchema.getVariable(k));
            }
        }
    }
    // For tokenization, sorting and loading.
    // One token (+ optional partitioning field) + primary keys + secondary
    // keys + other variables
    // secondary keys and other variables will be just passed to the
    // IndexInsertDelete Operator.
    int numTokenKeyPairFields = (!isPartitioned) ? 1 + numKeys : 2 + numKeys;
    // generate field permutations for the input
    int[] fieldPermutation = new int[numKeys];
    int[] modificationCallbackPrimaryKeyFields = new int[primaryKeys.size()];
    int i = 0;
    int j = 0;
    for (LogicalVariable varKey : primaryKeys) {
        int idx = propagatedSchema.findVariable(varKey);
        fieldPermutation[i] = idx;
        modificationCallbackPrimaryKeyFields[j] = i;
        i++;
        j++;
    }
    for (LogicalVariable varKey : otherKeys) {
        int idx = propagatedSchema.findVariable(varKey);
        fieldPermutation[i] = idx;
        i++;
    }
    for (LogicalVariable varKey : secondaryKeys) {
        int idx = propagatedSchema.findVariable(varKey);
        fieldPermutation[i] = idx;
        i++;
    }
    Dataset dataset = MetadataManagerUtil.findExistingDataset(mdTxnCtx, dataverseName, datasetName);
    String itemTypeName = dataset.getItemTypeName();
    IAType itemType;
    try {
        itemType = MetadataManager.INSTANCE.getDatatype(mdTxnCtx, dataset.getItemTypeDataverseName(), itemTypeName).getDatatype();
        if (itemType.getTypeTag() != ATypeTag.OBJECT) {
            throw new AlgebricksException("Only record types can be tokenized.");
        }
        ARecordType recType = (ARecordType) itemType;
        // Index parameters.
        Index secondaryIndex = MetadataManager.INSTANCE.getIndex(mdTxnCtx, dataset.getDataverseName(), dataset.getDatasetName(), indexName);
        List<List<String>> secondaryKeyExprs = secondaryIndex.getKeyFieldNames();
        List<IAType> secondaryKeyTypeEntries = secondaryIndex.getKeyFieldTypes();
        int numTokenFields = (!isPartitioned) ? secondaryKeys.size() : secondaryKeys.size() + 1;
        ITypeTraits[] tokenTypeTraits = new ITypeTraits[numTokenFields];
        ITypeTraits[] invListsTypeTraits = new ITypeTraits[primaryKeys.size()];
        // Find the key type of the secondary key. If it's a derived type,
        // return the derived type.
        // e.g. UNORDERED LIST -> return UNORDERED LIST type
        IAType secondaryKeyType;
        Pair<IAType, Boolean> keyPairType = Index.getNonNullableOpenFieldType(secondaryKeyTypeEntries.get(0), secondaryKeyExprs.get(0), recType);
        secondaryKeyType = keyPairType.first;
        List<List<String>> partitioningKeys = dataset.getPrimaryKeys();
        i = 0;
        for (List<String> partitioningKey : partitioningKeys) {
            IAType keyType = recType.getSubFieldType(partitioningKey);
            invListsTypeTraits[i] = TypeTraitProvider.INSTANCE.getTypeTrait(keyType);
            ++i;
        }
        tokenTypeTraits[0] = NonTaggedFormatUtil.getTokenTypeTrait(secondaryKeyType);
        if (isPartitioned) {
            // The partitioning field is hardcoded to be a short *without*
            // an Asterix type tag.
            tokenTypeTraits[1] = ShortPointable.TYPE_TRAITS;
        }
        IBinaryTokenizerFactory tokenizerFactory = NonTaggedFormatUtil.getBinaryTokenizerFactory(secondaryKeyType.getTypeTag(), indexType, secondaryIndex.getGramLength());
        Pair<IFileSplitProvider, AlgebricksPartitionConstraint> splitsAndConstraint = getSplitProviderAndConstraints(dataset, secondaryIndex.getIndexName());
        // Generate Output Record format
        ISerializerDeserializer<?>[] tokenKeyPairFields = new ISerializerDeserializer[numTokenKeyPairFields];
        ITypeTraits[] tokenKeyPairTypeTraits = new ITypeTraits[numTokenKeyPairFields];
        ISerializerDeserializerProvider serdeProvider = FormatUtils.getDefaultFormat().getSerdeProvider();
        // #1. propagate all input variables
        for (int k = 0; k < recordDesc.getFieldCount(); k++) {
            tokenKeyPairFields[k] = recordDesc.getFields()[k];
            tokenKeyPairTypeTraits[k] = recordDesc.getTypeTraits()[k];
        }
        int tokenOffset = recordDesc.getFieldCount();
        // #2. Specify the token type
        tokenKeyPairFields[tokenOffset] = serdeProvider.getSerializerDeserializer(secondaryKeyType);
        tokenKeyPairTypeTraits[tokenOffset] = tokenTypeTraits[0];
        tokenOffset++;
        // #3. Specify the length-partitioning key: number of token
        if (isPartitioned) {
            tokenKeyPairFields[tokenOffset] = ShortSerializerDeserializer.INSTANCE;
            tokenKeyPairTypeTraits[tokenOffset] = tokenTypeTraits[1];
        }
        RecordDescriptor tokenKeyPairRecDesc = new RecordDescriptor(tokenKeyPairFields, tokenKeyPairTypeTraits);
        IOperatorDescriptor tokenizerOp;
        // Keys to be tokenized : SK
        int docField = fieldPermutation[fieldPermutation.length - 1];
        // Keys to be propagated
        int[] keyFields = new int[numKeys];
        for (int k = 0; k < keyFields.length; k++) {
            keyFields[k] = k;
        }
        tokenizerOp = new BinaryTokenizerOperatorDescriptor(spec, tokenKeyPairRecDesc, tokenizerFactory, docField, keyFields, isPartitioned, true);
        return new Pair<>(tokenizerOp, splitsAndConstraint.second);
    } catch (Exception e) {
        throw new AlgebricksException(e);
    }
}