Example usage for org.apache.commons.el.parser ELParser ExpressionString

Introduction

In this page you can find the example usage for org.apache.commons.el.parser ELParser ExpressionString.

Prototype

final public Object ExpressionString() throws ParseException 

Source Link

Document

Returns a String if the expression string is a single String, an Expression if the expression string is a single Expression, an ExpressionString if it's a mixture of both.

Usage

From source file:gov.nih.nci.cabig.caaers.utils.el.EL.java

public String evaluate(String input) {
    try {//from w  ww .ja va  2  s. c  om
        StringReader rdr = new StringReader(input);
        ELParser parser = new ELParser(rdr);
        Object result = parser.ExpressionString();

        if (result instanceof String) {
            return (String) result;
        } else if (result instanceof Expression) {
            Expression expr = (Expression) result;
            result = expr.evaluate(this.resolver);
            return result == null ? null : result.toString();
        } else if (result instanceof ExpressionString) {
            Expression expr = (Expression) result;
            result = expr.evaluate(this.resolver);
            return result == null ? null : result.toString();
        } else if (result instanceof BinaryOperatorExpression) {
            BinaryOperatorExpression expr = (BinaryOperatorExpression) result;
            result = expr.evaluate(this.resolver, this.mapper, null);
            return result.toString();
        } else if (result instanceof BooleanLiteral) {
            BooleanLiteral expr = (BooleanLiteral) result;
            result = expr.evaluate(this.resolver, this.mapper, null);
            return result.toString();
        } else {
            System.out.println("Incorrect type returned; not String, Expression or ExpressionString");
            return "";
        }
    } catch (ParseException pe) {
        throw new RuntimeException("ParseException thrown: " + pe.getMessage(), pe);
    } catch (ELException ele) {
        throw new RuntimeException("ELException thrown: " + ele.getMessage(), ele);
    }
}

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From source file:com.cybernostics.jsp2thymeleaf.api.expressions.ExpressionWalker.java

public boolean walkExpressionString(String toWalk, ExpressionVisitor v) throws ParseException {
    ELParser eLParser = new ELParser(new StringReader(toWalk));
    final Object expr = eLParser.ExpressionString();
    if (expr instanceof String) {
        v.visitString((String) expr);
        return false;
    }/*from  w w w . j a  v a2 s . c  o  m*/
    walkExpression(expr, v);

    return true;
}

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From source file:it.cilea.osd.jdyna.web.tag.ExpressionEvaluatorImpl.java

/**
 * /*  ww w. j a  v  a2 s . co  m*/
 * Gets the parsed form of the given expression string. If the parsed form
 * is cached (and caching is not bypassed), return the cached form,
 * otherwise parse and cache the value. Returns either a String, Expression,
 * or ExpressionString.
 **/
public Object parseExpressionString(String pExpressionString) throws ELException {
    // See if it's an empty String
    if (pExpressionString.length() == 0) {
        return "";
    }

    // See if it's in the cache
    Object ret = null;

    if (ret == null) {
        // Parse the expression
        Reader r = new StringReader(pExpressionString);
        ELParser parser = new ELParser(r);
        try {
            ret = parser.ExpressionString();

        } catch (ParseException exc) {
            throw new ELException(exc);
        } catch (TokenMgrError exc) {
            // Note - this should never be reached, since the parser is
            // constructed to tokenize any input (illegal inputs get
            // parsed to <BADLY_ESCAPED_STRING_LITERAL> or
            // <ILLEGAL_CHARACTER>
            throw new ELException(exc.getMessage());
        }
    }
    return ret;
}

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From source file:org.apache.myfaces.el.ELParserHelper.java

/**
 * Gets the parsed form of the given expression string. Returns either an
 * Expression or ExpressionString./* w  ww.  ja  v  a 2 s .c  o m*/
 */
public static Object parseExpression(String expressionString) {
    expressionString = toJspElExpression(expressionString);

    ELParser parser = new ELParser(new StringReader(expressionString));
    try {
        Object expression = parser.ExpressionString();
        if (!(expression instanceof Expression) && !(expression instanceof ExpressionString)) {
            throw new ReferenceSyntaxException("Invalid expression: '" + expressionString
                    + "'. Parsed Expression of unexpected type " + expression.getClass().getName());
        }

        replaceSuffixes(expression);

        return expression;
    } catch (ParseException e) {
        String msg = "Invalid expression: '" + expressionString + "'";
        throw new ReferenceSyntaxException(msg, e);
    }
}

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From source file:org.seasar.s2jsfplugin.validater.S2JSFHTMLValidator.java

/** JSFJX^^Oof?[V?s?B */
private void validateJSFTaglib(String jsfTagName, FuzzyXMLElement element) throws CoreException {
    String mayaPrefix = Util.getMayaPrefix(element);
    if (mayaPrefix == null) {
        return;//from  w w  w .j  a va 2  s. c om
    }

    // UIR|?[lgK?{??H
    //      // K?{?`FbN
    //      TLDInfo tld = project.getTLDInfo(S2JSFPlugin.HTML_URI);
    //      TagInfo tag = tld.getTagInfo(jsfTagName);
    //      if(tld!=null){
    //         AttributeInfo[] attrs = tag.getAttributeInfo();
    //         for(int i=0;i<attrs.length;i++){
    //            if(attrs[i].isRequired() && element.getAttributeNode(mayaPrefix + ":" + attrs[i].getAttributeName())==null){
    //               createMarker(file,element.getOffset(),element.getOffset()+element.getLength(),
    //                     widget.getLineAtOffset(element.getOffset()),
    //                     mayaPrefix + ":" + attrs[i].getAttributeName() + "?K?{?B");
    //               return;
    //            }
    //         }
    //      }
    // ?l`FbN
    FuzzyXMLAttribute[] attrs = element.getAttributes();
    for (int i = 0; i < attrs.length; i++) {
        String attrName = attrs[i].getName();
        String attrValue = attrs[i].getValue();
        if (attrName.indexOf(":") <= 0) {
            continue;
        }
        String[] attrDim = attrName.split(":");
        if (!attrDim[0].equals(mayaPrefix)) {
            continue;
        }
        String type = JSFTagDefinition.getAttributeInfo(jsfTagName, attrDim[1]);
        if (type == null) {
            continue;
        }
        attrValue = processExpression(attrs[i], attrValue);
        if (attrValue == null) {
            continue;
        }

        if (type == JSFTagDefinition.VALUE) {
            type = JSFTagDefinition.PROPERTY;
        }
        // ELV^bNXG?[m
        String el = attrs[i].getValue();
        el = el.replaceFirst("^#", "\\$");
        try {
            ELParser parser = new ELParser(new StringReader(el));
            parser.ExpressionString();
        } catch (Exception ex) {
            createAttributeValueMarker(attrs[i], createMessage(ValidationMessages.INVALID_EL, attrValue));
            continue;
        }
        // V^bNXG?[BeanL?q??
        StringBuffer sb = new StringBuffer();
        boolean errorFlag = true;
        for (int j = 0; j < attrValue.length(); j++) {
            char c = attrValue.charAt(j);
            if (Character.isJavaIdentifierPart(c) || c == '.') {
                sb.append(c);
            } else {
                errorFlag = validateBinding(element, attrs[i], sb.toString(), type);
                sb.setLength(0);
                if (errorFlag == false) {
                    break;
                }
                if (c == '[') {
                    errorFlag = false;
                    break;
                }
            }
        }
        if (errorFlag == true && sb.length() > 0) {
            validateBinding(element, attrs[i], sb.toString(), type);
        }
    }
}

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From source file:org.seasar.teeda.core.el.impl.commons.CommonsELParser.java

public Object parse(final String expression) {
    String jspExpression = JspELParserUtil.convertToJspExpression(expression);
    ELParser parser = new ELParser(new StringReader(jspExpression));
    try {/*from w  w w  .j a  v a  2s  . com*/
        Object obj = parser.ExpressionString();
        getExpressionProcessor().processExpression(obj, Object.class);
        return obj;
    } catch (ParseException e) {
        throw new ReferenceSyntaxException();
    }
}

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From source file:org.seasar.teeda.core.el.impl.commons.CommonsExpressionProcessorImplTest.java

public void testProcessExpression() {
    CommonsExpressionProcessorImpl processor = new CommonsExpressionProcessorImpl();
    ELParser parser = new ELParser(new StringReader("${a.b}"));
    try {/*  w  w  w . j av a2s  .c  o  m*/
        Object obj = parser.ExpressionString();
        processor.processExpression(obj, Object.class);
    } catch (Exception ignore) {
    }
    try {
        processor.processExpression(new Object(), Object.class);
        fail();
    } catch (IllegalStateException e) {
        success();
    }
}

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From source file:org.seasar.teeda.core.el.impl.commons.CommonsExpressionProcessorImplTest.java

public void testEvaluate() {
    CommonsExpressionProcessorImpl processor = new CommonsExpressionProcessorImpl();
    ELParser parser = new ELParser(new StringReader("${a}"));
    Object expression = null;// w w  w  .j ava2 s  .  c o m
    try {
        expression = parser.ExpressionString();
        processor.processExpression(expression, Object.class);
    } catch (Exception ignore) {
    }
    MockVariableResolver resolver = getVariableResolver();
    A a = new A();
    resolver.putValue("a", a);
    Object o = processor.evaluate(getFacesContext(), expression);
    assertSame(a, o);
}

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From source file:org.seasar.teeda.core.el.impl.commons.CommonsExpressionProcessorImplTest.java

public void testEvaluate2() {
    CommonsExpressionProcessorImpl processor = new CommonsExpressionProcessorImpl();
    ELParser parser = new ELParser(new StringReader("b${a}"));
    Object expression = null;// ww w .  ja v  a2s.c om
    try {
        expression = parser.ExpressionString();
        processor.processExpression(expression, Object.class);
    } catch (Exception ignore) {
    }
    MockVariableResolver resolver = getVariableResolver();
    resolver.putValue("a", "A");
    MockApplication app = getApplication();
    app.setVariableResolver(resolver);
    Object o = processor.evaluate(getFacesContext(), expression);
    assertEquals("bA", o);
}

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From source file:org.seasar.teeda.core.el.impl.commons.CommonsExpressionProcessorImplTest.java

public void testResolveBase1() {
    CommonsExpressionProcessorImpl processor = new CommonsExpressionProcessorImpl();
    ELParser parser = new ELParser(new StringReader("${a}"));
    Object expression = null;//  w w w .ja va  2s.c om
    try {
        expression = parser.ExpressionString();
        processor.processExpression(expression, Object.class);
    } catch (Exception ignore) {
    }
    Object o = processor.resolveBase(getFacesContext(), expression);
    assertNotNull(o);
    assertTrue(o instanceof String);
    assertEquals("a", (String) o);
}

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