Example usage for javax.el ValueExpression getExpectedType

Introduction

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

Prototype

public abstract Class<?> getExpectedType();

Source Link

Usage

From source file:org.richfaces.component.RenderPhaseDataScrollerVisitor.java

private static boolean same(Object o1, Object o2) {
    if (o1 instanceof ValueExpression && o2 instanceof ValueExpression) {
        ValueExpression ve1 = (ValueExpression) o1;
        ValueExpression ve2 = (ValueExpression) o2;

        if (same(ve1.getExpressionString(), ve2.getExpressionString())
                && same(ve1.getExpectedType(), ve2.getExpectedType())) {
            return true;
        }// w  w  w  .  j  a v  a2 s  .  c o m
    }

    return (o1 != null && o1.equals(o2)) || (o1 == null && o2 == null);
}

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

@Override
protected void setProperties(UIComponent component) {
    ELContext elContext = getContext(pageContext.getELContext());
    Field[] fields = this.getClass().getDeclaredFields();
    for (Field field : fields) {
        try {/* ww w .  j a  va2  s . c o  m*/
            Object o = field.get(this);
            if (o != null && o instanceof ValueExpression) {
                String fieldName = field.getName();
                if (fieldName != null && fieldName.startsWith("_")) {
                    String attributeName = fieldName.replace("_", "");
                    if (ColumnsAttributes.FILTER_ATTRIBUTES.indexOf(attributeName) == -1
                            && ColumnsAttributes.SORT_ATTRIBUTES.indexOf(attributeName) == -1) {
                        ValueExpression ex = (ValueExpression) o;
                        ex = createValueExpression(elContext, ex);
                        component.setValueExpression(attributeName, ex);
                    } else {
                        ValueExpression ex = (ValueExpression) o;
                        ValueExpression expr = null;
                        if (!ex.isLiteralText()) {
                            expr = ELBuilder.createValueExpression(ex.getExpressionString(),
                                    ex.getExpectedType(),
                                    getFacesContext().getApplication().getExpressionFactory(),
                                    pageContext.getELContext(), itemId, indexId, getVarReplacement(),
                                    String.valueOf(index));
                        } else {
                            expr = ex;
                        }
                        component.setValueExpression(attributeName, expr);
                    }
                }

            }

        } catch (Exception e) {
            continue;
        }
    }
    // Set filterMethod attribute
    if (_filterMethod != null) {
        MethodExpression mexpr = getFacesContext().getApplication().getExpressionFactory()
                .createMethodExpression(elContext, _filterMethod.getExpressionString(), Object.class,
                        new Class[] { Object.class });
        ((HtmlColumn) component).setFilterMethod(mexpr);
    }
    // Set SortExpression attribute especially for scrollable data table
    if (_sortExpression != null) {
        ValueExpression expr = ELBuilder.createValueExpression(_sortExpression.getExpressionString(),
                _sortExpression.getExpectedType(), getFacesContext().getApplication().getExpressionFactory(),
                pageContext.getELContext(), itemId, indexId, getVarReplacement(), String.valueOf(index));
        component.setValueExpression("sortExpression", expr);
    }

}

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

/**
 * Creates value expression to be out into column
 * /*  w w w .  ja  va2  s  .  co  m*/
 * @param context
 * @param orig
 * @return
 */
private ValueExpression createValueExpression(ELContext context, ValueExpression orig) {
    ValueExpression vexpr = getFacesContext().getApplication().getExpressionFactory()
            .createValueExpression(context, orig.getExpressionString(), orig.getExpectedType());
    return vexpr;
}

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