Java Code Examples for org.springframework.expression.spel.support.StandardEvaluationContext#setVariables()

The following examples show how to use org.springframework.expression.spel.support.StandardEvaluationContext#setVariables() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SpelExceptionTests.java    From spring-analysis-note with MIT License 6 votes vote down vote up 
@Test
@SuppressWarnings("serial")
public void spelExpressionListWithVariables() {
	ExpressionParser parser = new SpelExpressionParser();
	Expression spelExpression = parser.parseExpression("#aList.contains('one')");
	StandardEvaluationContext ctx = new StandardEvaluationContext();
	ctx.setVariables(new HashMap<String, Object>() {
		{
			put("aList", new ArrayList<String>() {
				{
					add("one");
					add("two");
					add("three");
				}
			});

		}
	});
	boolean result = spelExpression.getValue(ctx, Boolean.class);
	assertTrue(result);
}
Example 2
Source File: SpelTest.java    From onetwo with Apache License 2.0 6 votes vote down vote up 
@Test
	public void test2(){
		StandardEvaluationContext elcontext = new StandardEvaluationContext();
		TestBean tb = new TestBean();
		tb.aaa = "cccc";
		Map map = LangUtils.asMap("ccc", "dddd", "userName", "testUser");
//		map.put("tb", tb);
		map.put("map", LangUtils.asMap("ccc", "dddd", "tb", tb));
		elcontext.setRootObject(map);
		Expression exp = parser.parseExpression("['ccc']");
		Object val = (String)exp.getValue(elcontext, String.class);
		System.out.println("val: " + val);
		Assert.assertEquals("dddd", val);

		elcontext.setVariables(map);
		elcontext.setRootObject(null);
		exp = parser.parseExpression("I am ${#userName}", PARSER_CONTEXT);
		val = (String)exp.getValue(elcontext, String.class);
		System.out.println("val: " + val);
		Assert.assertEquals("I am testUser", val);
	}
Example 3
Source File: SpelTest.java    From onetwo with Apache License 2.0 6 votes vote down vote up 
@Test
	public void test(){
		StandardEvaluationContext elcontext = new StandardEvaluationContext();
		TestBean tb = new TestBean();
		tb.aaa = "cccc";
		Map map = LangUtils.asMap("ccc", "dddd");
//		map.put("tb", tb);
		map.put("map", LangUtils.asMap("ccc", "dddd", "tb", tb));
		elcontext.setVariables(map);
		elcontext.setRootObject(tb);
		Expression exp = parser.parseExpression("'bb{ccc}'");
		Object val = (String)exp.getValue(elcontext, String.class);
		Assert.assertEquals("bb{ccc}", val);
		
		exp = parser.parseExpression("#ccc");
		val = (String)exp.getValue(elcontext, String.class);
		Assert.assertEquals("dddd", val);
		
		exp = parser.parseExpression("#map['tb'].aaa");
		val = (String)exp.getValue(elcontext, String.class);
		Assert.assertEquals("cccc", val);
	}
Example 4
Source File: SpelTest.java    From onetwo with Apache License 2.0 6 votes vote down vote up 
@Test
	public void test(){
		StandardEvaluationContext elcontext = new StandardEvaluationContext();
		TestBean tb = new TestBean();
		tb.aaa = "cccc";
		Map map = LangUtils.asMap("ccc", "dddd");
//		map.put("tb", tb);
		map.put("map", LangUtils.asMap("ccc", "dddd", "tb", tb));
		elcontext.setVariables(map);
		elcontext.setRootObject(tb);
		Expression exp = parser.parseExpression("'bb{ccc}'");
		Object val = (String)exp.getValue(elcontext, String.class);
		Assert.assertEquals("bb{ccc}", val);
		
		exp = parser.parseExpression("#ccc");
		val = (String)exp.getValue(elcontext, String.class);
		Assert.assertEquals("dddd", val);
		
		exp = parser.parseExpression("#map['tb'].aaa");
		val = (String)exp.getValue(elcontext, String.class);
		Assert.assertEquals("cccc", val);
	}
Example 5
Source File: AssertionEvaluation.java    From gravitee-gateway with Apache License 2.0 6 votes vote down vote up 
@Override
public boolean validate() throws EvaluationException {
    try {
        final ExpressionParser parser = new SpelExpressionParser();
        final Expression expr = parser.parseExpression(assertion);

        final StandardEvaluationContext context = new StandardEvaluationContext();
        context.registerFunction("jsonPath",
                BeanUtils.resolveSignature("evaluate", JsonPathFunction.class));
        context.setVariables(variables);

        return expr.getValue(context, boolean.class);
    } catch (SpelEvaluationException spelex) {
        throw new EvaluationException("Assertion can not be verified : " + assertion, spelex);
    }
}
Example 6
Source File: ExpressionEvaluationServiceImpl.java    From konker-platform with Apache License 2.0 6 votes vote down vote up 
@Override
public boolean evaluateConditional(String conditionalExpression, Map<String, Object> evaluationContext) {
    Optional.ofNullable(conditionalExpression)
            .filter(template -> !template.isEmpty())
            .orElseThrow(() -> new IllegalArgumentException("Conditional expression cannot be null or empty"));

    Optional.ofNullable(evaluationContext)
            .orElseThrow(() -> new IllegalArgumentException("Evaluation context cannot be null"));

    Expression expression = new SpelExpressionParser().parseExpression(conditionalExpression);

    StandardEvaluationContext standardEvaluationContext = new StandardEvaluationContext();
    standardEvaluationContext.addPropertyAccessor(new MapAccessor());
    standardEvaluationContext.setVariables(evaluationContext);

    return expression.getValue(standardEvaluationContext,Boolean.class);
}
Example 7
Source File: ExpressionEvaluationServiceImpl.java    From konker-platform with Apache License 2.0 6 votes vote down vote up 
@Override
public String evaluateTemplate(String expressionTemplate, Map<String, Object> evaluationContext) {
    Optional.ofNullable(expressionTemplate)
        .filter(template -> !template.isEmpty())
        .orElseThrow(() -> new IllegalArgumentException("Expression template cannot be null or empty"));

    Optional.ofNullable(evaluationContext)
        .orElseThrow(() -> new IllegalArgumentException("Evaluation context cannot be null"));

    Expression expression = new SpelExpressionParser().parseExpression(expressionTemplate
            ,new TemplateParserContext("@{","}"));

    StandardEvaluationContext standardEvaluationContext = new StandardEvaluationContext();
    try {
        standardEvaluationContext.registerFunction("urlEncode",
                Functions.class.getDeclaredMethod("urlEncode", new Class[] {String.class}));
    } catch (NoSuchMethodException e) {
        throw new EvaluationException("Fail to register function to evaluation context", e);
    }
    standardEvaluationContext.addPropertyAccessor(new MapAccessor());
    standardEvaluationContext.setVariables(evaluationContext);

    return expression.getValue(standardEvaluationContext,String.class);
}
Example 8
Source File: SpelExceptionTests.java    From java-technology-stack with MIT License 6 votes vote down vote up 
@Test
@SuppressWarnings("serial")
public void spelExpressionListIndexAccessWithVariables() {
	ExpressionParser parser = new SpelExpressionParser();
	Expression spelExpression = parser.parseExpression("#aList[0] eq 'one'");
	StandardEvaluationContext ctx = new StandardEvaluationContext();
	ctx.setVariables(new HashMap<String, Object>() {
		{
			put("aList", new ArrayList<String>() {
				{
					add("one");
					add("two");
					add("three");
				}
			});

		}
	});
	boolean result = spelExpression.getValue(ctx, Boolean.class);
	assertTrue(result);
}
Example 9
Source File: SpelExceptionTests.java    From java-technology-stack with MIT License 6 votes vote down vote up 
@Test
@SuppressWarnings("serial")
public void spelExpressionListWithVariables() {
	ExpressionParser parser = new SpelExpressionParser();
	Expression spelExpression = parser.parseExpression("#aList.contains('one')");
	StandardEvaluationContext ctx = new StandardEvaluationContext();
	ctx.setVariables(new HashMap<String, Object>() {
		{
			put("aList", new ArrayList<String>() {
				{
					add("one");
					add("two");
					add("three");
				}
			});

		}
	});
	boolean result = spelExpression.getValue(ctx, Boolean.class);
	assertTrue(result);
}
Example 10
Source File: SpelExceptionTests.java    From java-technology-stack with MIT License 6 votes vote down vote up 
@Test
@SuppressWarnings("serial")
public void spelExpressionMapWithVariables() {
	ExpressionParser parser = new SpelExpressionParser();
	Expression spelExpression = parser.parseExpression("#aMap['one'] eq 1");
	StandardEvaluationContext ctx = new StandardEvaluationContext();
	ctx.setVariables(new HashMap<String, Object>() {
		{
			put("aMap", new HashMap<String, Integer>() {
				{
					put("one", 1);
					put("two", 2);
					put("three", 3);
				}
			});

		}
	});
	boolean result = spelExpression.getValue(ctx, Boolean.class);
	assertTrue(result);

}
Example 11
Source File: SpelExceptionTests.java    From spring-analysis-note with MIT License 6 votes vote down vote up 
@Test
@SuppressWarnings("serial")
public void spelExpressionListIndexAccessWithVariables() {
	ExpressionParser parser = new SpelExpressionParser();
	Expression spelExpression = parser.parseExpression("#aList[0] eq 'one'");
	StandardEvaluationContext ctx = new StandardEvaluationContext();
	ctx.setVariables(new HashMap<String, Object>() {
		{
			put("aList", new ArrayList<String>() {
				{
					add("one");
					add("two");
					add("three");
				}
			});

		}
	});
	boolean result = spelExpression.getValue(ctx, Boolean.class);
	assertTrue(result);
}
Example 12
Source File: SpelExceptionTests.java    From spring-analysis-note with MIT License 6 votes vote down vote up 
@Test
@SuppressWarnings("serial")
public void spelExpressionMapWithVariables() {
	ExpressionParser parser = new SpelExpressionParser();
	Expression spelExpression = parser.parseExpression("#aMap['one'] eq 1");
	StandardEvaluationContext ctx = new StandardEvaluationContext();
	ctx.setVariables(new HashMap<String, Object>() {
		{
			put("aMap", new HashMap<String, Integer>() {
				{
					put("one", 1);
					put("two", 2);
					put("three", 3);
				}
			});

		}
	});
	boolean result = spelExpression.getValue(ctx, Boolean.class);
	assertTrue(result);

}
Example 13
Source File: SpelExceptionTests.java    From java-technology-stack with MIT License 5 votes vote down vote up 
@Test
@SuppressWarnings("serial")
public void spelExpressionArrayWithVariables() {
	ExpressionParser parser = new SpelExpressionParser();
	Expression spelExpression = parser.parseExpression("#anArray[0] eq 1");
	StandardEvaluationContext ctx = new StandardEvaluationContext();
	ctx.setVariables(new HashMap<String, Object>() {
		{
			put("anArray", new int[] {1,2,3});
		}
	});
	boolean result = spelExpression.getValue(ctx, Boolean.class);
	assertTrue(result);
}
Example 14
Source File: SpelExpressionHelper.java    From herd with Apache License 2.0 5 votes vote down vote up 
/**
 * Evaluates the given expression using the given variables as context variables.
 * 
 * @param <T> The desired type
 * @param expression The expression to evaluate
 * @param desiredResultType The desired type of the result. Spring will make best attempt at converting result to this type.
 * @param variables The variables to put into context
 * @return The result of the evaluation
 */
public <T> T evaluate(Expression expression, Class<T> desiredResultType, Map<String, Object> variables)
{
    StandardEvaluationContext context = new StandardEvaluationContext();

    if (variables != null)
    {
        context.setVariables(variables);
    }

    return expression.getValue(context, desiredResultType);
}
Example 15
Source File: SpringELSequenceFormatterFactory.java    From cloud-config with MIT License 5 votes vote down vote up 
public static SequenceFormatter createFormatter(final String formatExpression) {
    return new SequenceFormatter() {
        @Override
        public String format(Map<String, Object> variables) {
            StandardEvaluationContext simpleContext = new StandardEvaluationContext();
            simpleContext.setVariables(variables);
            return expressionCache.getUnchecked(formatExpression).getValue(simpleContext, String.class);
        }
    };
}
Example 16
Source File: SpelExceptionTests.java    From spring-analysis-note with MIT License 5 votes vote down vote up 
@Test
@SuppressWarnings("serial")
public void spelExpressionArrayWithVariables() {
	ExpressionParser parser = new SpelExpressionParser();
	Expression spelExpression = parser.parseExpression("#anArray[0] eq 1");
	StandardEvaluationContext ctx = new StandardEvaluationContext();
	ctx.setVariables(new HashMap<String, Object>() {
		{
			put("anArray", new int[] {1,2,3});
		}
	});
	boolean result = spelExpression.getValue(ctx, Boolean.class);
	assertTrue(result);
}
Example 17
Source File: ExpressionHandler.java    From nifi with Apache License 2.0 5 votes vote down vote up 
private void executeSPEL(String command, Map<String, Object> facts) {
    final ExpressionParser parser = new SpelExpressionParser();
    StandardEvaluationContext context = new StandardEvaluationContext();
    context.setRootObject(facts);
    context.setVariables(facts);
    Expression expression = parser.parseExpression(command);
    Object value = expression.getValue(context);
    if(getLogger().isDebugEnabled()) {
        getLogger().debug("Expression was executed successfully with result: {}. {}: {}", new Object[]{value, type, command});
    }
}
Example 18
Source File: RulesSPELCondition.java    From nifi with Apache License 2.0 5 votes vote down vote up 
public boolean evaluate(Facts facts) {
    try {
        StandardEvaluationContext context = new StandardEvaluationContext();
        context.setRootObject(facts.asMap());
        context.setVariables(facts.asMap());
        return this.compiledExpression.getValue(context, Boolean.class);
    } catch (Exception ex) {
        if(ignoreConditionErrors) {
            LOGGER.debug("Unable to evaluate expression: '" + this.expression + "' on facts: " + facts, ex);
            return false;
        } else{
            throw ex;
        }
    }
}
Example 19
Source File: SpELLocator.java    From mybatis-shard with Eclipse Public License 1.0 3 votes vote down vote up 
@Override
public String locate(Map<String, Object> locateParam) {

    ExpressionParser parser = new SpelExpressionParser();

    Expression expression = parser.parseExpression(this.rule);

    StandardEvaluationContext context = new StandardEvaluationContext();
    context.setVariables(locateParam);

    return expression.getValue(context, String.class);

}