Examples with StorageException edu.uci.ics.texera.api.exception.StorageException used on opensource projects

Example 21 with StorageException

use of edu.uci.ics.texera.api.exception.StorageException in project textdb by TextDB.

the class DataWriter method insertTuple.

public IDField insertTuple(Tuple tuple) throws StorageException {
    if (!isOpen) {
        throw new StorageException(ErrorMessages.OPERATOR_NOT_OPENED);
    }
    try {
        // tuple must not contain _id field
        if (tuple.getSchema().containsAttribute(SchemaConstants._ID)) {
            throw new StorageException("Tuple must not contain _id field. _id must be generated by the system");
        }
        // generate a random ID for this tuple
        IDField idField = new IDField(UUID.randomUUID().toString());
        Tuple tupleWithID = getTupleWithID(tuple, idField);
        // make sure the tuple's schema agrees with the table's schema
        if (!tupleWithID.getSchema().equals(this.schema)) {
            throw new StorageException("Tuple's schema is not the same as the table's schema");
        }
        Document document = getLuceneDocument(tupleWithID);
        this.luceneIndexWriter.addDocument(document);
        this.dataStore.incrementNumDocuments(1);
        return idField;
    } catch (IOException e) {
        close();
        throw new StorageException(e.getMessage(), e);
    }
}

Example 22 with StorageException

use of edu.uci.ics.texera.api.exception.StorageException in project textdb by TextDB.

the class RelationManager method deleteTable.

/**
 * Deletes a table by its name.
 * If the table doesn't exist, it won't do anything.
 * Deleting system catalog tables is prohibited.
 *
 * @param tableName, the name of a table, case insensitive
 * @throws StorageException
 */
public void deleteTable(String tableName) throws StorageException {
    tableName = tableName.toLowerCase();
    // User can't delete catalog table
    if (isSystemCatalog(tableName)) {
        throw new StorageException("Deleting a system catalog table is prohibited.");
    }
    // if table doesn't exist, then do nothing
    if (!checkTableExistence(tableName)) {
        return;
    }
    // try to clear all data in the table
    DataWriter dataWriter = getTableDataWriter(tableName);
    dataWriter.open();
    dataWriter.clearData();
    dataWriter.close();
    StorageUtils.deleteDirectory(getTableDirectory(tableName));
    // generate a query for the table name
    Query catalogTableNameQuery = new TermQuery(new Term(CatalogConstants.TABLE_NAME, tableName));
    // delete the table from table catalog
    DataWriter tableCatalogWriter = new DataWriter(CatalogConstants.TABLE_CATALOG_DATASTORE, LuceneAnalyzerConstants.getStandardAnalyzer());
    tableCatalogWriter.open();
    tableCatalogWriter.deleteTuple(catalogTableNameQuery);
    tableCatalogWriter.close();
    // delete the table from schema catalog
    DataWriter schemaCatalogWriter = new DataWriter(CatalogConstants.SCHEMA_CATALOG_DATASTORE, LuceneAnalyzerConstants.getStandardAnalyzer());
    schemaCatalogWriter.open();
    schemaCatalogWriter.deleteTuple(catalogTableNameQuery);
    schemaCatalogWriter.close();
}

Example 23 with StorageException

use of edu.uci.ics.texera.api.exception.StorageException in project textdb by TextDB.

the class RelationManager method initializeCatalog.

/*
     * Initializes the system catalog tables.
     */
private void initializeCatalog() throws StorageException {
    try {
        // create table catalog
        writeTableInfoToCatalog(CatalogConstants.TABLE_CATALOG.toLowerCase(), CatalogConstants.TABLE_CATALOG_DIRECTORY.toRealPath(), CatalogConstants.TABLE_CATALOG_SCHEMA, LuceneAnalyzerConstants.standardAnalyzerString());
        // create schema catalog
        writeTableInfoToCatalog(CatalogConstants.SCHEMA_CATALOG.toLowerCase(), CatalogConstants.SCHEMA_CATALOG_DIRECTORY.toRealPath(), CatalogConstants.SCHEMA_CATALOG_SCHEMA, LuceneAnalyzerConstants.standardAnalyzerString());
    } catch (IOException e) {
        throw new StorageException(e);
    }
}

Example 24 with StorageException

use of edu.uci.ics.texera.api.exception.StorageException in project textdb by TextDB.

the class RelationManager method getTableDirectory.

/**
 * Gets the directory of a table.
 *
 * @param tableName, the name of the table, case insensitive
 * @return
 * @throws StorageException
 */
public String getTableDirectory(String tableName) throws StorageException {
    // get the tuples with tableName from the table catalog
    Tuple tableCatalogTuple = getTableCatalogTuple(tableName);
    // if the tuple is not found, then the table name is not found
    if (tableCatalogTuple == null) {
        throw new StorageException(String.format("The directory for table %s is not found.", tableName));
    }
    // get the directory field
    IField directoryField = tableCatalogTuple.getField(CatalogConstants.TABLE_DIRECTORY);
    return directoryField.getValue().toString();
}