Example usage for org.springframework.expression.spel.standard SpelExpressionParser SpelExpressionParser

Introduction

In this page you can find the example usage for org.springframework.expression.spel.standard SpelExpressionParser SpelExpressionParser.

Prototype

public SpelExpressionParser()

Source Link

Document

Create a parser with default settings.

Usage

From source file:prospring3.spel.SpelMain.java

public static void main(String[] args) {
    int sum = 0;//from  w  w w  .  j a v  a  2  s . co  m
    for (int a = 0; a < 10; a++) {
        sum += a;
    }
    System.out.println("sum = " + sum);

    ExpressionParser parser = new SpelExpressionParser();
    Expression e2 = parser.parseExpression("'Hello World'.bytes.length");
    //        int v2 = e2.getValue(); // ALT+Enter and Idea suggest cast to int through Integer wrapper
    //        System.out.println("v2 = " + v2);

    Expression e = parser.parseExpression("'Hello World'");
    Object v = e.getValue();
    System.out.println("v = " + v);

    e = parser.parseExpression("'Hello World'.concat('!')");
    v = e.getValue();
    System.out.println("v = " + v);

}

From source file:gov.nih.nci.calims2.taglib.form.SingleSelectHelper.java

/**
 * Interprets the properties String and returns a map of property name to expressions.
 * /*  w  w  w  . ja v a  2s  .co  m*/
 * @param propertyString The string to interpret
 * @return The properties expression map
 */
static Map<String, Expression> getPropertyMap(String propertyString) {
    ExpressionParser expressionParser = new SpelExpressionParser();
    Map<String, Expression> map = new TreeMap<String, Expression>();
    if (propertyString != null) {
        for (String propertySpec : propertyString.split(",")) {
            String[] propertyElements = propertySpec.split(":");
            if (propertyElements == null || propertyElements.length != 2) {
                throw new IllegalArgumentException("Invalid property specification: " + propertySpec);
            }
            String name = StringUtils.stripToNull(propertyElements[0]);
            if (name == null) {
                throw new IllegalArgumentException("Invalid property name");
            }
            String value = StringUtils.stripToNull(propertyElements[1]);
            if (value == null) {
                throw new IllegalArgumentException("Invalid property value");
            }
            map.put(name, expressionParser.parseExpression(value));
        }

    }
    return map;
}

From source file:app.commons.SpELUtils.java

public static Object parseExpression(String expression, Object rootObject) {
    ExpressionParser parser = new SpelExpressionParser();
    StandardEvaluationContext ctx = new StandardEvaluationContext();
    //        ctx.setBeanResolver();
    ctx.setRootObject(rootObject);//w w  w  .j  av a  2 s.  co  m
    //        ctx.setVariable("root", rootObject);
    return parser.parseExpression(expression).getValue(ctx);
}

From source file:bugs.TestEL.java

/**
 * Test the EL.//from   ww  w.  ja  va2s  . c  o  m
 */
@SuppressWarnings({ "boxing", "deprecation" })
@Test
public void testName() {
    // Arrange
    final SpelExpressionParser parser = new SpelExpressionParser();
    final StandardEvaluationContext context = new StandardEvaluationContext();

    final String spelExpression1 = "testDate.date";
    final String spelExpression2 = "class";
    final String spelExpression3 = "class.name";
    final String spelExpression4 = "name";

    final Date now = new Date();
    final String name = "Testname";

    final TestObject testObject = new TestObject();
    testObject.setTestDate(now);
    testObject.setName(name);

    final SpelExpression exp1 = (SpelExpression) parser.parseExpression(spelExpression1);
    final SpelExpression exp2 = (SpelExpression) parser.parseExpression(spelExpression2);
    final SpelExpression exp3 = (SpelExpression) parser.parseExpression(spelExpression3);
    final SpelExpression exp4 = (SpelExpression) parser.parseExpression(spelExpression4);
    // Act

    final Object value1 = exp1.getValue(context, testObject);

    final Object value2 = exp2.getValue(context, testObject);

    final Object value3 = exp3.getValue(context, testObject);

    Object value4 = null;
    try {
        value4 = exp4.getValue(context, testObject);
    } catch (SpelEvaluationException e) {
        Assert.assertEquals(
                "EL1021E:(pos 0): A problem occurred whilst " + "attempting to access the property 'name': "
                        + "'Unable to access property 'name' through getter'",
                e.getMessage());
        // CSOFF: RegexpSinglelineJava
        System.err.println("Spring-Bug SPR-9017 happens!");
        // CSON: RegexpSinglelineJava
        value4 = name;
    }

    // Assert
    Assert.assertEquals(value1, now.getDate());
    Assert.assertEquals(value2, TestObject.class);
    Assert.assertEquals(value3, TestObject.class.getName());
    Assert.assertEquals(value4, name);

}

From source file:com.github.sebhoss.contract.verifier.SpELBasedContractContextFactory.java

@Override
public ContractContext createContext(final Object instance, final Object[] arguments,
        final String[] parameterNames) {
    final ExpressionParser parser = new SpelExpressionParser();
    final EvaluationContext context = new StandardEvaluationContext(instance);

    for (int index = 0; index < arguments.length; index++) {
        context.setVariable(parameterNames[index], arguments[index]);
    }/*www  . ja  v  a 2s .  c o  m*/

    return new SpELContractContext(parser, context);
}

From source file:com.tacitknowledge.flip.spring.SpElValueExpressionEvaluator.java

/** {@inheritDoc } */
public Object evaluate(Object context, String expression) {
    final ExpressionParser parser = new SpelExpressionParser();
    return parser.parseExpression(expression).getValue(context);
}

From source file:org.cloudfoundry.identity.app.web.MapWrapper.java

public MapWrapper(Object target) throws Exception {
    this.target = target;
    context = new StandardEvaluationContext();
    context.addPropertyAccessor(new MapAccessor());
    parser = new SpelExpressionParser();
}

From source file:de.itsvs.cwtrpc.security.DefaultRpcAuthenticationFailureHandler.java

public static Expression createExceptionExpression(Class<? extends Exception> exceptionClass,
        boolean includeMessage) {
    final StringBuilder expressionString;
    final ExpressionParser parser;
    final Expression expression;

    expressionString = new StringBuilder();
    expressionString.append("new ");
    expressionString.append(exceptionClass.getCanonicalName());
    expressionString.append('(');
    if (includeMessage) {
        expressionString.append("message");
    }//w ww  .j a v  a 2 s  .  com
    expressionString.append(')');

    parser = new SpelExpressionParser();
    expression = parser.parseExpression(expressionString.toString());

    return expression;
}

From source file:com.graphaware.common.policy.spel.SpelInclusionPolicy.java

protected SpelInclusionPolicy(String expression) {
    this.expression = expression;
    this.exp = new SpelExpressionParser().parseExpression(expression);
}

From source file:org.juiser.spring.jwt.ClaimsExpressionEvaluator.java

public ClaimsExpressionEvaluator(String spelExpression) {
    Assert.hasText(spelExpression, "spelExpression argument cannot be null or empty.");
    ExpressionParser parser = new SpelExpressionParser();
    this.expressionString = spelExpression;
    this.expression = parser.parseExpression(spelExpression);
}