Examples with HSQLDDLInfo org.hsqldb_voltpatches.HSQLDDLInfo used on opensource projects

Example 1 with HSQLDDLInfo

use of org.hsqldb_voltpatches.HSQLDDLInfo in project voltdb by VoltDB.

the class HSQLLexer method preprocessHSQLDDL.

//===== Public interface
/**
     * Glean some basic info about DDL statements sent to HSQLDB
     */
public static HSQLDDLInfo preprocessHSQLDDL(String ddl) {
    ddl = SQLLexer.stripComments(ddl);
    Matcher matcher = HSQL_DDL_PREPROCESSOR.matcher(ddl);
    if (matcher.find()) {
        String verbString = matcher.group("verb");
        HSQLDDLInfo.Verb verb = HSQLDDLInfo.Verb.get(verbString);
        if (verb == null) {
            return null;
        }
        String nounString = matcher.group("object");
        HSQLDDLInfo.Noun noun = HSQLDDLInfo.Noun.get(nounString);
        if (noun == null) {
            return null;
        }
        boolean createStream = verb.equals(HSQLDDLInfo.Verb.CREATE) && noun.equals(HSQLDDLInfo.Noun.STREAM);
        String name = matcher.group("name");
        if (name == null) {
            return null;
        }
        String secondName = matcher.group("subject");
        if (secondName != null) {
            secondName = secondName.toLowerCase();
        }
        // cascade/if exists are interesting on alters and drops
        boolean cascade = false;
        boolean ifexists = false;
        if (verb != HSQLDDLInfo.Verb.CREATE) {
            matcher = DDL_IFEXISTS_OR_CASCADE_CHECK.matcher(ddl);
            if (matcher.matches()) {
                // Don't be too sensitive to regex specifics by assuming null always
                // indicates a missing clause. Look for empty too.
                String existsClause = matcher.group("exists");
                String cascadeClause = matcher.group("cascade");
                ifexists = existsClause != null && !existsClause.isEmpty();
                cascade = cascadeClause != null && !cascadeClause.isEmpty();
            }
        }
        return new HSQLDDLInfo(verb, noun, name.toLowerCase(), secondName, cascade, ifexists, createStream);
    }
    return null;
}

Example 2 with HSQLDDLInfo

use of org.hsqldb_voltpatches.HSQLDDLInfo in project voltdb by VoltDB.

the class DDLCompiler method processVoltDBStatements.

private void processVoltDBStatements(final Database db, final DdlProceduresToLoad whichProcs, DDLStatement stmt) throws VoltCompilerException {
    boolean processed = false;
    try {
        // Process a VoltDB-specific DDL statement, like PARTITION, REPLICATE,
        // CREATE PROCEDURE, CREATE FUNCTION, and CREATE ROLE.
        processed = m_voltStatementProcessor.process(stmt, db, whichProcs);
    } catch (VoltCompilerException e) {
        // Reformat the message thrown by VoltDB DDL processing to have a line number.
        String msg = "VoltDB DDL Error: \"" + e.getMessage() + "\" in statement starting on lineno: " + stmt.lineNo;
        throw m_compiler.new VoltCompilerException(msg);
    }
    if (!processed) {
        try {
            //* enable to debug */ System.out.println("DEBUG: " + stmt.statement);
            // kind of ugly.  We hex-encode each statement so we can
            // avoid embedded newlines so we can delimit statements
            // with newline.
            m_fullDDL += Encoder.hexEncode(stmt.statement) + "\n";
            // figure out what table this DDL might affect to minimize diff processing
            HSQLDDLInfo ddlStmtInfo = HSQLLexer.preprocessHSQLDDL(stmt.statement);
            // Get the diff that results from applying this statement and apply it
            // to our local tree (with Volt-specific additions)
            VoltXMLDiff thisStmtDiff = m_hsql.runDDLCommandAndDiff(ddlStmtInfo, stmt.statement);
            // null diff means no change (usually drop if exists for non-existent thing)
            if (thisStmtDiff != null) {
                applyDiff(thisStmtDiff);
            }
            // special treatment for stream syntax
            if (ddlStmtInfo.creatStream) {
                processCreateStreamStatement(stmt, db, whichProcs);
            }
        } catch (HSQLParseException e) {
            String msg = "DDL Error: \"" + e.getMessage() + "\" in statement starting on lineno: " + stmt.lineNo;
            throw m_compiler.new VoltCompilerException(msg, stmt.lineNo);
        }
    }
}

Example 3 with HSQLDDLInfo

use of org.hsqldb_voltpatches.HSQLDDLInfo in project voltdb by VoltDB.

the class TestSQLLexer method checkInvalidHSQLPreprocessing.

void checkInvalidHSQLPreprocessing(String ddl) {
    HSQLDDLInfo info = HSQLLexer.preprocessHSQLDDL(ddl);
    assertEquals(null, info);
}

Example 4 with HSQLDDLInfo

use of org.hsqldb_voltpatches.HSQLDDLInfo in project voltdb by VoltDB.

the class TestSQLLexer method checkValidHSQLPreprocessing.

void checkValidHSQLPreprocessing(String ddl, HSQLDDLInfo.Verb verb, HSQLDDLInfo.Noun noun, String name, String secondName, boolean ifexists, boolean cascade) {
    HSQLDDLInfo info = HSQLLexer.preprocessHSQLDDL(ddl);
    assertNotNull(info);
    assertEquals(verb, info.verb);
    assertEquals(noun, info.noun);
    assertEquals(name, info.name);
    assertEquals(secondName, info.secondName);
    assertEquals(ifexists, info.ifexists);
    assertEquals(cascade, info.cascade);
}