Examples with SQLExpressionFactory org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory used on opensource projects

Example 36 with SQLExpressionFactory

use of org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory in project datanucleus-rdbms by datanucleus.

the class TemporalHourMethod2 method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    SQLExpression invokedExpr = getInvokedExpression(expr, args, "HOUR");
    RDBMSStoreManager storeMgr = stmt.getRDBMSManager();
    JavaTypeMapping mapping = storeMgr.getMappingManager().getMapping(String.class);
    ArrayList funcArgs = new ArrayList();
    funcArgs.add(invokedExpr);
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    funcArgs.add(exprFactory.newLiteral(stmt, mapping, "HH24"));
    ArrayList funcArgs2 = new ArrayList();
    funcArgs2.add(new StringExpression(stmt, mapping, "TO_CHAR", funcArgs));
    return new NumericExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class), "TO_NUMBER", funcArgs2);
}

Example 37 with SQLExpressionFactory

use of org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory in project datanucleus-rdbms by datanucleus.

the class TemporalHourMethod3 method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    SQLExpression invokedExpr = getInvokedExpression(expr, args, "HOUR");
    RDBMSStoreManager storeMgr = stmt.getRDBMSManager();
    JavaTypeMapping mapping = storeMgr.getMappingManager().getMapping(String.class);
    ArrayList funcArgs = new ArrayList();
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    funcArgs.add(exprFactory.newLiteral(stmt, mapping, "hour"));
    funcArgs.add(invokedExpr);
    return new NumericExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class), "date_part", funcArgs);
}

Example 38 with SQLExpressionFactory

use of org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory in project datanucleus-rdbms by datanucleus.

the class TemporalHourMethod4 method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    SQLExpression invokedExpr = getInvokedExpression(expr, args, "HOUR");
    RDBMSStoreManager storeMgr = stmt.getRDBMSManager();
    JavaTypeMapping mapping = storeMgr.getMappingManager().getMapping(String.class);
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    SQLExpression hh = exprFactory.newLiteral(stmt, mapping, "hh");
    ((StringLiteral) hh).generateStatementWithoutQuotes();
    ArrayList funcArgs = new ArrayList();
    funcArgs.add(hh);
    // CAST {invokedExpr} AS DATETIME
    List castArgs = new ArrayList<>();
    castArgs.add(invokedExpr);
    funcArgs.add(new TemporalExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(Date.class), "CAST", castArgs, asList("DATETIME")));
    return new NumericExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class), "DATEPART", funcArgs);
}

Example 39 with SQLExpressionFactory

use of org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory in project datanucleus-rdbms by datanucleus.

the class TemporalHourMethod5 method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    SQLExpression invokedExpr = getInvokedExpression(expr, args, "HOUR");
    RDBMSStoreManager storeMgr = stmt.getRDBMSManager();
    JavaTypeMapping mapping = storeMgr.getMappingManager().getMapping(String.class);
    ArrayList funcArgs = new ArrayList();
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    funcArgs.add(exprFactory.newLiteral(stmt, mapping, "%H"));
    funcArgs.add(invokedExpr);
    return new NumericExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class), "strftime", funcArgs);
}

Example 40 with SQLExpressionFactory

use of org.datanucleus.store.rdbms.sql.expression.SQLExpressionFactory in project datanucleus-rdbms by datanucleus.

the class SimpleNumericAggregateMethod method getExpression.

/* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
     */
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
    if (expr != null) {
        throw new NucleusException(Localiser.msg("060002", getFunctionName(), expr));
    }
    if (args == null || args.size() != 1) {
        throw new NucleusException(getFunctionName() + " is only supported with a single argument");
    }
    if (stmt.getQueryGenerator().getCompilationComponent() == CompilationComponent.RESULT || stmt.getQueryGenerator().getCompilationComponent() == CompilationComponent.HAVING) {
        // FUNC(argExpr)
        // Use same java type as the argument
        SQLExpression argExpr = args.get(0);
        JavaTypeMapping m = argExpr.getJavaTypeMapping();
        return new AggregateNumericExpression(stmt, m, getFunctionName(), args);
    }
    ClassLoaderResolver clr = stmt.getQueryGenerator().getClassLoaderResolver();
    // Handle as Subquery "SELECT AVG(expr) FROM tbl"
    SQLExpression argExpr = args.get(0);
    SelectStatement subStmt = new SelectStatement(stmt, stmt.getRDBMSManager(), argExpr.getSQLTable().getTable(), argExpr.getSQLTable().getAlias(), null);
    subStmt.setClassLoaderResolver(clr);
    SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
    JavaTypeMapping mapping = stmt.getRDBMSManager().getMappingManager().getMappingWithDatastoreMapping(String.class, false, false, clr);
    String aggregateString = getFunctionName() + "(" + argExpr.toSQLText() + ")";
    SQLExpression aggExpr = exprFactory.newLiteral(subStmt, mapping, aggregateString);
    ((StringLiteral) aggExpr).generateStatementWithoutQuotes();
    subStmt.select(aggExpr, null);
    JavaTypeMapping subqMapping = exprFactory.getMappingForType(Integer.class, false);
    SQLExpression subqExpr = new NumericSubqueryExpression(stmt, subStmt);
    subqExpr.setJavaTypeMapping(subqMapping);
    return subqExpr;
}