Example usage for javax.el ValueExpression getValue

Introduction

In this page you can find the example usage for javax.el ValueExpression getValue.

Prototype

public abstract Object getValue(ELContext context);

Source Link

Usage

From source file:com.github.persapiens.jsfboot.security.AuthorizeFaceletsTag.java

private String getAttributeValue(FaceletContext faceletContext, TagAttribute tagAttribute, boolean evaluate) {
    String value = null;//w  w  w .  j av a2  s  . co  m
    if (tagAttribute != null) {
        if (evaluate) {
            ValueExpression expression = tagAttribute.getValueExpression(faceletContext, String.class);
            value = (String) expression.getValue(faceletContext.getFacesContext().getELContext());
        } else {
            value = tagAttribute.getValue();
        }
    }
    return value;
}

From source file:org.nuxeo.ecm.platform.actions.jsf.JSFActionContext.java

@Override
public boolean checkCondition(String expression) throws ELException {
    if (StringUtils.isBlank(expression) || (expression != null && StringUtils.isBlank(expression.trim()))) {
        return false;
    }//  w  w w .  j  a v  a 2 s  .  c om
    String expr = expression.trim();
    // compatibility code, as JEXL could resolve that kind of expression:
    // detect if expression is in brackets #{}, otherwise add it
    if (!expr.startsWith("#{") && !expr.startsWith("${")
    // don't confuse error messages in case of simple mistakes in the
    // expression
            && !expr.endsWith("}")) {
        expr = "#{" + expr + "}";
    }
    ELContext finalContext = new JSFELContext(originalContext);
    VariableMapper vm = finalContext.getVariableMapper();
    // init default variables
    ValueExpression documentExpr = expressionFactory.createValueExpression(getCurrentDocument(),
            DocumentModel.class);
    ValueExpression userExpr = expressionFactory.createValueExpression(getCurrentPrincipal(),
            NuxeoPrincipal.class);
    vm.setVariable("actionContextDocument", documentExpr);
    // add variables originally exposed by the action framework,
    // do not add aliases currentDocument and currentUser here as they
    // should already be available in this JSF context
    vm.setVariable("document", documentExpr);
    vm.setVariable("principal", userExpr);
    // get custom context from ActionContext
    for (String key : localVariables.keySet()) {
        vm.setVariable(key, expressionFactory.createValueExpression(getLocalVariable(key), Object.class));
    }
    // expose Seam context for compatibility, although available its
    // components should be natively exposed in this JSF context
    putLocalVariable("SeamContext", new SeamContextHelper());

    // evaluate expression
    ValueExpression ve = expressionFactory.createValueExpression(finalContext, expr, Boolean.class);
    return Boolean.TRUE.equals(ve.getValue(finalContext));
}

From source file:org.apache.camel.language.juel.JuelExpression.java

public <T> T evaluate(Exchange exchange, Class<T> tClass) {
    // TODO we could use caching here but then we'd have possible concurrency issues
    // so lets assume that the provider caches

    // Create (if needed) the ExpressionFactory first from the CamelContext using FactoryFinder
    ExpressionFactory factory = getExpressionFactory(exchange.getContext());
    ELContext context = populateContext(createContext(), exchange);
    ValueExpression valueExpression = factory.createValueExpression(context, expression, type);
    Object value = valueExpression.getValue(context);
    return exchange.getContext().getTypeConverter().convertTo(tClass, value);
}

From source file:org.nuxeo.ecm.platform.ui.web.binding.alias.AliasValueExpression.java

/**
 * Looks up the {@link AliasVariableMapper} in the context, and if found, resolve the corresponding
 * {@link ValueExpression}./*w  ww  .  j av a  2 s  . c  o  m*/
 */
@Override
public Object getValue(ELContext context) {
    ValueExpression ve = resolveExpression(context);
    Object res = null;
    if (ve != null) {
        res = ve.getValue(context);
    }
    if (log.isDebugEnabled()) {
        log.debug("Resolved expression var='" + var + "' for mapper with id '" + id + "': " + res);
    }
    return res;
}

From source file:org.nuxeo.ecm.platform.ui.web.directory.UIDirectorySelectItem.java

public String getDirectoryName() {
    if (directoryName != null) {
        return directoryName;
    }/*from   w w w. ja  v a 2  s.  com*/
    ValueExpression ve = getValueExpression("directoryName");
    if (ve != null) {
        try {
            return (String) ve.getValue(getFacesContext().getELContext());
        } catch (ELException e) {
            throw new FacesException(e);
        }
    } else {
        // default value
        return null;
    }
}

From source file:velo.uiComponents.XMLManager.java

public String getFilename() {
    if (this.filename != null)
        return this.filename;
    ValueExpression vb = this.getValueExpression("filename");
    if (vb != null)
        return (String) vb.getValue(FacesContext.getCurrentInstance().getELContext());
    return null;/*from  ww w .  j a  v  a 2  s.  c om*/
}

From source file:org.nuxeo.ecm.platform.ui.web.component.editor.UIHtmlEditor.java

public String getCols() {
    if (cols != null) {
        return cols;
    }/*from   www  .  j  a  v a 2  s . co  m*/
    ValueExpression ve = getValueExpression("cols");
    if (ve != null) {
        try {
            return (String) ve.getValue(getFacesContext().getELContext());
        } catch (ELException e) {
            throw new FacesException(e);
        }
    } else {
        // default value
        return "100";
    }
}

From source file:org.nuxeo.ecm.platform.ui.web.component.editor.UIHtmlEditor.java

public String getRows() {
    if (rows != null) {
        return rows;
    }/*w w w  .  ja  v  a  2  s.  c o  m*/
    ValueExpression ve = getValueExpression("rows");
    if (ve != null) {
        try {
            return (String) ve.getValue(getFacesContext().getELContext());
        } catch (ELException e) {
            throw new FacesException(e);
        }
    } else {
        // default value
        return "25";
    }
}

From source file:org.nuxeo.ecm.platform.ui.web.component.editor.UIHtmlEditor.java

public String getWidth() {
    if (width != null) {
        return width;
    }//  www .  j  a va 2s . c o  m
    ValueExpression ve = getValueExpression("width");
    if (ve != null) {
        try {
            return (String) ve.getValue(getFacesContext().getELContext());
        } catch (ELException e) {
            throw new FacesException(e);
        }
    } else {
        // default value
        return "640";
    }
}

From source file:org.nuxeo.ecm.platform.ui.web.component.editor.UIHtmlEditor.java

public String getHeight() {
    if (height != null) {
        return height;
    }/*  w w  w.  ja v a  2 s . c om*/
    ValueExpression ve = getValueExpression("height");
    if (ve != null) {
        try {
            return (String) ve.getValue(getFacesContext().getELContext());
        } catch (ELException e) {
            throw new FacesException(e);
        }
    } else {
        // default value
        return "400";
    }
}