Example usage for javax.el ValueReference getBase

Introduction

In this page you can find the example usage for javax.el ValueReference getBase.

Prototype

public Object getBase() 

Source Link

Usage

From source file:org.nuxeo.ecm.platform.ui.web.validator.DocumentConstraintValidator.java

@Override
public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
    if (context == null) {
        throw new NullPointerException();
    }/*  w  w w .j a va 2s .com*/
    if (component == null) {
        throw new NullPointerException();
    }
    ValueExpression ve = component.getValueExpression("value");
    if (ve == null) {
        return;
    }

    ValueExpressionAnalyzer expressionAnalyzer = new ValueExpressionAnalyzer(ve);
    ValueReference vref = expressionAnalyzer.getReference(context.getELContext());

    if (log.isDebugEnabled()) {
        log.debug(String.format("Validating  value '%s' for expression '%s', base=%s, prop=%s", value,
                ve.getExpressionString(), vref.getBase(), vref.getProperty()));
    }

    if (isResolvable(vref, ve)) {
        List<ConstraintViolation> violations = doValidate(context, vref, ve, value);
        if (violations != null && !violations.isEmpty()) {
            Locale locale = context.getViewRoot().getLocale();
            if (violations.size() == 1) {
                ConstraintViolation v = violations.iterator().next();
                String msg = v.getMessage(locale);
                throw new ValidatorException(new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, msg));
            } else {
                Set<FacesMessage> messages = new LinkedHashSet<FacesMessage>(violations.size());
                for (ConstraintViolation v : violations) {
                    String msg = v.getMessage(locale);
                    messages.add(new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, msg));
                }
                throw new ValidatorException(messages);
            }
        }
    }
}

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From source file:org.nuxeo.ecm.platform.ui.web.validator.DocumentConstraintValidator.java

@SuppressWarnings("rawtypes")
private boolean isResolvable(ValueReference ref, ValueExpression ve) {
    if (ve == null || ref == null) {
        return false;
    }/*www  .j  av a2 s .  co m*/
    Object base = ref.getBase();
    if (base != null) {
        Class baseClass = base.getClass();
        if (baseClass != null) {
            if (DocumentPropertyContext.class.isAssignableFrom(baseClass)
                    || (Property.class.isAssignableFrom(baseClass))
                    || (ProtectedEditableModel.class.isAssignableFrom(baseClass))
                    || (ListItemMapper.class.isAssignableFrom(baseClass))) {
                return true;
            }
        }
    }
    if (log.isDebugEnabled()) {
        log.debug(String.format("NOT validating %s, base=%s, prop=%s", ve.getExpressionString(), base,
                ref.getProperty()));
    }
    return false;
}

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From source file:org.nuxeo.ecm.platform.ui.web.validator.DocumentConstraintValidator.java

protected List<ConstraintViolation> doValidate(FacesContext context, ValueReference vref, ValueExpression e,
        Object value) {//from   w  ww .j  ava  2  s.c o  m
    DocumentValidationService validationService = Framework.getService(DocumentValidationService.class);
    // document validation
    DocumentValidationReport report = null;
    if (!validationService.isActivated(CTX_JSFVALIDATOR, null)) {
        return null;
    }
    XPathAndField field = resolveField(context, vref, e);
    if (field != null) {
        boolean validateSubs = getHandleSubProperties().booleanValue();
        // use the xpath to validate the field
        // this allow to get the custom message defined for field if there's error
        report = validationService.validate(field.xpath, value, validateSubs);
        if (log.isDebugEnabled()) {
            log.debug(String.format("VALIDATED  value '%s' for expression '%s', base=%s, prop=%s", value,
                    e.getExpressionString(), vref.getBase(), vref.getProperty()));
        }
    } else {
        if (log.isDebugEnabled()) {
            log.debug(String.format("NOT Validating  value '%s' for expression '%s', base=%s, prop=%s", value,
                    e.getExpressionString(), vref.getBase(), vref.getProperty()));
        }
    }

    if (report != null && report.hasError()) {
        return report.asList();
    }

    return null;
}

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From source file:org.nuxeo.ecm.platform.ui.web.validator.DocumentConstraintValidator.java

protected XPathAndField resolveField(FacesContext context, ValueReference vref, ValueExpression ve) {
    Object base = vref.getBase();
    Object propObj = vref.getProperty();
    if (propObj != null && !(propObj instanceof String)) {
        // ignore cases where prop would not be a String
        return null;
    }/*from   w ww .j a  va 2 s .  c om*/
    String xpath = null;
    Field field = null;
    String prop = (String) propObj;
    Class<?> baseClass = base.getClass();
    if (DocumentPropertyContext.class.isAssignableFrom(baseClass)) {
        DocumentPropertyContext dc = (DocumentPropertyContext) base;
        xpath = dc.getSchema() + ":" + prop;
        field = getField(xpath);
    } else if (Property.class.isAssignableFrom(baseClass)) {
        xpath = ((Property) base).getPath() + "/" + prop;
        field = getField(((Property) base).getField(), prop);
    } else if (ProtectedEditableModel.class.isAssignableFrom(baseClass)) {
        ProtectedEditableModel model = (ProtectedEditableModel) base;
        ValueExpression listVe = model.getBinding();
        ValueExpressionAnalyzer expressionAnalyzer = new ValueExpressionAnalyzer(listVe);
        ValueReference listRef = expressionAnalyzer.getReference(context.getELContext());
        if (isResolvable(listRef, listVe)) {
            XPathAndField parentField = resolveField(context, listRef, listVe);
            if (parentField != null) {
                field = getField(parentField.field, "*");
                if (parentField.xpath == null) {
                    xpath = field.getName().getLocalName();
                } else {
                    xpath = parentField.xpath + "/" + field.getName().getLocalName();
                }
            }
        }
    } else if (ListItemMapper.class.isAssignableFrom(baseClass)) {
        ListItemMapper mapper = (ListItemMapper) base;
        ProtectedEditableModel model = mapper.getModel();
        ValueExpression listVe;
        if (model.getParent() != null) {
            // move one level up to resolve parent list binding
            listVe = model.getParent().getBinding();
        } else {
            listVe = model.getBinding();
        }
        ValueExpressionAnalyzer expressionAnalyzer = new ValueExpressionAnalyzer(listVe);
        ValueReference listRef = expressionAnalyzer.getReference(context.getELContext());
        if (isResolvable(listRef, listVe)) {
            XPathAndField parentField = resolveField(context, listRef, listVe);
            if (parentField != null) {
                field = getField(parentField.field, prop);
                if (field == null || field.getName() == null) {
                    // it should not happen but still, just in case
                    return null;
                }
                if (parentField.xpath == null) {
                    xpath = field.getName().getLocalName();
                } else {
                    xpath = parentField.xpath + "/" + field.getName().getLocalName();
                }
            }
        }
    } else {
        log.error(String.format("Cannot validate expression '%s, base=%s'", ve.getExpressionString(), base));
    }
    // cleanup / on begin or at end
    if (xpath != null) {
        xpath = StringUtils.strip(xpath, "/");
    } else if (field == null && xpath == null) {
        return null;
    }
    return new XPathAndField(field, xpath);
}

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