Example usage for javax.el ELContext getContext

Introduction

In this page you can find the example usage for javax.el ELContext getContext.

Prototype

public Object getContext(@SuppressWarnings("rawtypes") Class key) 

Source Link

Document

Obtain the context object for the given key.

Usage

From source file:org.apache.tiles.evaluator.el.TilesContextELResolver.java

/** {@inheritDoc} */
@Override/*from  w  ww  . j a v a2s  .co m*/
public Class<?> getType(ELContext context, Object base, Object property) {
    // only resolve at the root of the context
    if (base != null) {
        return null;
    }

    Class<?> retValue = null;
    if (requestProperties.contains(property)) {
        TilesRequestContext request = (TilesRequestContext) context.getContext(TilesRequestContext.class);
        retValue = super.getType(context, request, property);
    } else if (applicationProperties.contains(property)) {
        TilesApplicationContext applicationContext = (TilesApplicationContext) context
                .getContext(TilesApplicationContext.class);
        retValue = super.getType(context, applicationContext, property);
    }

    if (retValue != null) {
        context.setPropertyResolved(true);
    }

    return retValue;
}

---

From source file:org.apache.tiles.evaluator.el.TilesContextELResolver.java

/** {@inheritDoc} */
@Override/*from  w  ww.j a  v a2 s  .  co m*/
public Object getValue(ELContext context, Object base, Object property) {
    // only resolve at the root of the context
    if (base != null) {
        return null;
    }

    Object retValue = null;

    if (requestProperties.contains(property)) {
        TilesRequestContext request = (TilesRequestContext) context.getContext(TilesRequestContext.class);
        retValue = super.getValue(context, request, property);
    } else if (applicationProperties.contains(property)) {
        TilesApplicationContext applicationContext = (TilesApplicationContext) context
                .getContext(TilesApplicationContext.class);
        retValue = super.getValue(context, applicationContext, property);
    }

    if (retValue != null) {
        context.setPropertyResolved(true);
    }

    return retValue;
}

---

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

protected ValueExpression resolveExpression(ELContext context) {
    FacesContext facesContext = (FacesContext) context.getContext(FacesContext.class);
    AliasVariableMapper vm = AliasVariableMapper.getVariableMapper(facesContext, id);

    if (vm == null) {
        if (log.isDebugEnabled()) {
            log.debug("No alias variable mapper with id '" + id + "' found in request for var '" + var + "'");
        }//w w  w  . ja v  a 2s.c om
        return null;
    }

    ValueExpression ve = vm.resolveVariable(var);
    if (ve == null) {
        log.error("Variable for var '" + var + "' not found in alias variable mapper with id '" + id + "'");
        return null;
    }

    return ve;
}

---

From source file:org.richfaces.taglib.ColumnsTag.java

/**
 * Create custom context with VariableMapper override.
 * /*  ww w. j  a v  a 2 s.c o m*/
 * @param context
 * @return
 */
private ELContext getContext(final ELContext cont) {
    return new ELContext() {

        @Override
        public Object getContext(Class key) {
            return cont.getContext(key);
        }

        @Override
        public ELResolver getELResolver() {
            return cont.getELResolver();
        }

        @Override
        public FunctionMapper getFunctionMapper() {
            return cont.getFunctionMapper();
        }

        @Override
        public VariableMapper getVariableMapper() {
            return new VariableMapper() {

                @Override
                public ValueExpression resolveVariable(String variable) {
                    if (variable.equals(itemId)) {
                        return new IndexedValueExpression(__value, index);
                    } else if (variable.equals(indexId)) {
                        return new IteratedIndexExpression(index);
                    }
                    return cont.getVariableMapper().resolveVariable(variable);
                }

                @Override
                public ValueExpression setVariable(String variable, ValueExpression expression) {
                    return cont.getVariableMapper().setVariable(variable, expression);
                }

            };
        }

    };
}

---