Examples with PrimaryExpression org.datanucleus.query.expression.PrimaryExpression used on opensource projects

Example 46 with PrimaryExpression

use of org.datanucleus.query.expression.PrimaryExpression in project datanucleus-core by datanucleus.

the class StringEqualsMethod method evaluate.

/* (non-Javadoc)
     * @see org.datanucleus.query.evaluator.memory.InvocationEvaluator#evaluate(org.datanucleus.query.expression.InvokeExpression, org.datanucleus.query.evaluator.memory.InMemoryExpressionEvaluator)
     */
public Object evaluate(InvokeExpression expr, Object invokedValue, InMemoryExpressionEvaluator eval) {
    String method = expr.getOperation();
    if (invokedValue == null) {
        return Boolean.FALSE;
    }
    if (!(invokedValue instanceof String)) {
        throw new NucleusException(Localiser.msg("021011", method, invokedValue.getClass().getName()));
    }
    String arg1 = null;
    Object argObj = null;
    Object param = expr.getArguments().get(0);
    if (param instanceof PrimaryExpression) {
        PrimaryExpression primExpr = (PrimaryExpression) param;
        argObj = eval.getValueForPrimaryExpression(primExpr);
    } else if (param instanceof ParameterExpression) {
        ParameterExpression paramExpr = (ParameterExpression) param;
        argObj = QueryUtils.getValueForParameterExpression(eval.getParameterValues(), paramExpr);
    } else if (param instanceof Literal) {
        argObj = ((Literal) param).getLiteral();
    } else if (param instanceof InvokeExpression) {
        argObj = eval.getValueForInvokeExpression((InvokeExpression) param);
    } else {
        throw new NucleusException(method + "(param) where param is instanceof " + param.getClass().getName() + " not supported");
    }
    arg1 = QueryUtils.getStringValue(argObj);
    return ((String) invokedValue).equals(arg1) ? Boolean.TRUE : Boolean.FALSE;
}

Example 47 with PrimaryExpression

use of org.datanucleus.query.expression.PrimaryExpression in project datanucleus-core by datanucleus.

the class StringIndexOfMethod method evaluate.

/* (non-Javadoc)
     * @see org.datanucleus.query.evaluator.memory.InvocationEvaluator#evaluate(org.datanucleus.query.expression.InvokeExpression, org.datanucleus.query.evaluator.memory.InMemoryExpressionEvaluator)
     */
public Object evaluate(InvokeExpression expr, Object invokedValue, InMemoryExpressionEvaluator eval) {
    String method = expr.getOperation();
    if (invokedValue == null) {
        return Integer.valueOf(-1);
    }
    if (!(invokedValue instanceof String)) {
        throw new NucleusException(Localiser.msg("021011", method, invokedValue.getClass().getName()));
    }
    // Evaluate the first argument
    String arg1 = null;
    Object arg1Obj = null;
    Object param = expr.getArguments().get(0);
    if (param instanceof PrimaryExpression) {
        PrimaryExpression primExpr = (PrimaryExpression) param;
        arg1Obj = eval.getValueForPrimaryExpression(primExpr);
    } else if (param instanceof ParameterExpression) {
        ParameterExpression paramExpr = (ParameterExpression) param;
        arg1Obj = QueryUtils.getValueForParameterExpression(eval.getParameterValues(), paramExpr);
    } else if (param instanceof Literal) {
        arg1Obj = ((Literal) param).getLiteral();
    } else if (param instanceof InvokeExpression) {
        arg1Obj = eval.getValueForInvokeExpression((InvokeExpression) param);
    } else {
        throw new NucleusException(method + "(param[, num1]) where param is instanceof " + param.getClass().getName() + " not supported");
    }
    arg1 = QueryUtils.getStringValue(arg1Obj);
    Integer result = null;
    if (expr.getArguments().size() == 2) {
        // Evaluate the second argument
        int arg2 = -1;
        param = expr.getArguments().get(1);
        Object arg2Obj = null;
        if (param instanceof PrimaryExpression) {
            PrimaryExpression primExpr = (PrimaryExpression) param;
            arg2Obj = eval.getValueForPrimaryExpression(primExpr);
        } else if (param instanceof ParameterExpression) {
            ParameterExpression paramExpr = (ParameterExpression) param;
            arg2Obj = QueryUtils.getValueForParameterExpression(eval.getParameterValues(), paramExpr);
        } else if (param instanceof Literal) {
            arg2Obj = ((Literal) param).getLiteral();
        } else if (param instanceof DyadicExpression) {
            arg2Obj = ((DyadicExpression) param).evaluate(eval);
        } else {
            throw new NucleusException(method + "(param1, param2) where param2 is instanceof " + param.getClass().getName() + " not supported");
        }
        if (!(arg2Obj instanceof Number)) {
            throw new NucleusException(method + "(param1,param2) : param2 must be numeric");
        }
        arg2 = ((Number) arg2Obj).intValue();
        result = Integer.valueOf(((String) invokedValue).indexOf(arg1, arg2));
    } else {
        result = Integer.valueOf(((String) invokedValue).indexOf(arg1));
    }
    return result;
}

Example 48 with PrimaryExpression

use of org.datanucleus.query.expression.PrimaryExpression in project datanucleus-core by datanucleus.

the class StringMatchesMethod method evaluate.

/* (non-Javadoc)
     * @see org.datanucleus.query.evaluator.memory.InvocationEvaluator#evaluate(org.datanucleus.query.expression.InvokeExpression, org.datanucleus.query.evaluator.memory.InMemoryExpressionEvaluator)
     */
public Object evaluate(InvokeExpression expr, Object invokedValue, InMemoryExpressionEvaluator eval) {
    String method = expr.getOperation();
    if (invokedValue == null) {
        return Boolean.FALSE;
    }
    if (!(invokedValue instanceof String)) {
        throw new NucleusException(Localiser.msg("021011", method, invokedValue.getClass().getName()));
    }
    String arg = null;
    Object argObj = null;
    Object param = expr.getArguments().get(0);
    if (expr.getArguments().size() > 1) {
        NucleusLogger.QUERY.info("Please note that any escape character is currently ignored");
    // TODO Cater for optional second argument that is the escape character
    }
    if (param instanceof PrimaryExpression) {
        PrimaryExpression primExpr = (PrimaryExpression) param;
        argObj = eval.getValueForPrimaryExpression(primExpr);
    } else if (param instanceof ParameterExpression) {
        ParameterExpression paramExpr = (ParameterExpression) param;
        argObj = QueryUtils.getValueForParameterExpression(eval.getParameterValues(), paramExpr);
    } else if (param instanceof Literal) {
        argObj = ((Literal) param).getLiteral();
    } else if (param instanceof InvokeExpression) {
        argObj = eval.getValueForInvokeExpression((InvokeExpression) param);
    } else {
        throw new NucleusException(method + "(param) where param is instanceof " + param.getClass().getName() + " not supported");
    }
    arg = QueryUtils.getStringValue(argObj);
    if (eval.getQueryLanguage().equalsIgnoreCase(Query.LANGUAGE_JPQL)) {
        // Convert JPQL like expression to String.matches input
        String matchesArg = arg;
        matchesArg = StringUtils.replaceAll(matchesArg, "%", ".*");
        matchesArg = matchesArg.replace('_', '.');
        arg = matchesArg;
    }
    return ((String) invokedValue).matches(arg) ? Boolean.TRUE : Boolean.FALSE;
}

Example 49 with PrimaryExpression

use of org.datanucleus.query.expression.PrimaryExpression in project datanucleus-core by datanucleus.

the class SubstringFunction method evaluate.

/* (non-Javadoc)
     * @see org.datanucleus.query.evaluator.memory.InvocationEvaluator#evaluate(org.datanucleus.query.expression.InvokeExpression, org.datanucleus.query.evaluator.memory.InMemoryExpressionEvaluator)
     */
public Object evaluate(InvokeExpression expr, Object invokedValue, InMemoryExpressionEvaluator eval) {
    String method = expr.getOperation();
    Object param = expr.getArguments().get(0);
    Object paramValue = null;
    if (param instanceof PrimaryExpression) {
        PrimaryExpression primExpr = (PrimaryExpression) param;
        paramValue = eval.getValueForPrimaryExpression(primExpr);
    } else if (param instanceof ParameterExpression) {
        ParameterExpression paramExpr = (ParameterExpression) param;
        paramValue = QueryUtils.getValueForParameterExpression(eval.getParameterValues(), paramExpr);
    } else if (param instanceof Literal) {
        paramValue = ((Literal) param).getLiteral();
    } else {
        throw new NucleusException(method + "(param, num1, num2) where param is instanceof " + param.getClass().getName() + " not supported");
    }
    if (paramValue == null) {
        return null;
    }
    Object num1 = expr.getArguments().get(1);
    int num1Value = -1;
    if (num1 instanceof Literal) {
        // Extract Integer from arithmetic Literal
        num1Value = eval.getIntegerForLiteral((Literal) num1);
    } else {
        throw new NucleusException(method + "(param, num1, num2) where num1 is instanceof " + num1.getClass().getName() + " not supported");
    }
    Object num2 = expr.getArguments().get(2);
    int num2Value = -1;
    if (num2 instanceof Literal) {
        num2Value = eval.getIntegerForLiteral((Literal) num2);
    } else {
        throw new NucleusException(method + "(param, num1, num2) where num2 is instanceof " + num2.getClass().getName() + " not supported");
    }
    return ((String) paramValue).substring(num1Value, num2Value);
}

Example 50 with PrimaryExpression

use of org.datanucleus.query.expression.PrimaryExpression in project datanucleus-core by datanucleus.

the class SizeFunction method evaluate.

/* (non-Javadoc)
     * @see org.datanucleus.query.evaluator.memory.InvocationEvaluator#evaluate(org.datanucleus.query.expression.InvokeExpression, org.datanucleus.query.evaluator.memory.InMemoryExpressionEvaluator)
     */
public Object evaluate(InvokeExpression expr, Object invokedValue, InMemoryExpressionEvaluator eval) {
    String method = expr.getOperation();
    Object param = expr.getArguments().get(0);
    Object paramValue = null;
    if (param instanceof PrimaryExpression) {
        PrimaryExpression primExpr = (PrimaryExpression) param;
        paramValue = eval.getValueForPrimaryExpression(primExpr);
    } else if (param instanceof ParameterExpression) {
        ParameterExpression paramExpr = (ParameterExpression) param;
        paramValue = QueryUtils.getValueForParameterExpression(eval.getParameterValues(), paramExpr);
    } else if (param instanceof Literal) {
        paramValue = ((Literal) param).getLiteral();
    } else {
        throw new NucleusException(method + "(param) where param is instanceof " + param.getClass().getName() + " not supported");
    }
    if (paramValue == null) {
        return null;
    }
    if (paramValue instanceof Collection) {
        return Integer.valueOf(((Collection) paramValue).size());
    } else if (paramValue instanceof Map) {
        return Integer.valueOf(((Map) paramValue).size());
    }
    return null;
}