Examples with MapContext org.apache.commons.jexl3.MapContext used on opensource projects

Example 56 with MapContext

use of org.apache.commons.jexl3.MapContext in project shifu by ShifuML.

the class JexlTest method testJavaDouble.

@Test
public void testJavaDouble() {
    JexlEngine jexl = new JexlEngine();
    String jexlExp = "columnA + columnB";
    Expression e = jexl.createExpression(jexlExp);
    JexlContext jc = new MapContext();
    // Now evaluate the expression, getting the result
    Integer val = (Integer) e.evaluate(jc);
    Assert.assertEquals(val, Integer.valueOf(0));
    jc.set("columnA", "0.3");
    double value = (Double) e.evaluate(jc);
    Assert.assertEquals(0.3, value);
    jc.set("columnB", "0.7");
    value = (Double) e.evaluate(jc);
    Assert.assertEquals(value, 1.0);
}

Example 57 with MapContext

use of org.apache.commons.jexl3.MapContext in project aries by apache.

the class JexlPropertyEvaluator method evaluate.

public Object evaluate(String expression, Map<String, Object> properties) {
    try {
        JexlEngine engine = new JexlEngine();
        MapContext context = new MapContext(properties);
        Expression exp = engine.createExpression(expression);
        return exp.evaluate(context);
    } catch (Exception e) {
        LOGGER.info("Could not evaluate expression: {}", expression);
        LOGGER.info("Exception:", e);
        return null;
    }
}

Example 58 with MapContext

use of org.apache.commons.jexl3.MapContext in project dhis2-core by dhis2.

the class ExpressionUtils method evaluate.

/**
 * @param expression the expression.
 * @param vars the variables, can be null.
 * @param strict indicates whether to use strict or lenient engine mode.
 * @return the result of the evaluation.
 */
private static Object evaluate(String expression, Map<String, Object> vars, boolean strict) {
    expression = expression.replaceAll(IGNORED_KEYWORDS_REGEX, StringUtils.EMPTY);
    JexlEngine engine = strict ? JEXL_STRICT : JEXL;
    Expression exp = engine.createExpression(expression);
    JexlContext context = vars != null ? new MapContext(vars) : new MapContext();
    return exp.evaluate(context);
}