Example usage for org.apache.commons.jxpath JXPathContext removePath

Introduction

In this page you can find the example usage for org.apache.commons.jxpath JXPathContext removePath.

Prototype

public abstract void removePath(String xpath);

Source Link

Document

Removes the element of the object graph described by the xpath.

Usage

From source file:com.ebay.jetstream.epl.EPLUtilities.java

/**
 * transformToObject - This method converts incoming JsonString to HashMap. Need/use of this method is, in EPL we need
 * to use pass Objects through window. But EPL allows primitives type alone. For that we 'll convert Obejct to
 * JsonString and pass it to the stream. After that we need to convert back the Json String to original Object type.
 * //from   w  w  w  . ja v a 2  s  .  c om
 */
@SuppressWarnings("unchecked")
public static HashMap<String, Object> transformToObjectAndRemoveKey(String jsonStr, String key)
        throws Exception {
    if (jsonStr != null) {
        ObjectMapper mapper = new ObjectMapper();
        HashMap<String, Object> event = mapper.readValue(jsonStr, HashMap.class);
        if (key != null && !key.equals("")) {
            JXPathContext context = JXPathContext.newContext(event);
            context.setLenient(true);
            context.removePath(key);
        }
        return event;
    }
    return null;
}

---

From source file:org.apache.cocoon.forms.binding.DeleteNodeJXPathBinding.java

/**
 * Removes the current context-bean from the jxpath context.
 *///w  w  w .  ja va 2 s  . c  om
public void doSave(Widget frmModel, JXPathContext jxpc) {
    // get rid of the contextbean
    jxpc.removePath(".");
}

---

From source file:org.apache.cocoon.forms.binding.EnhancedRepeaterJXPathBinding.java

public void doSave(Widget frmModel, JXPathContext jxpc) throws BindingException {
    Repeater repeater = (Repeater) selectWidget(frmModel, super.getId());
    if (!(repeater instanceof EnhancedRepeater)) {
        super.doSave(frmModel, jxpc);
        return;/*from   w w  w  . ja  v  a  2  s  .  com*/
    }

    EnhancedRepeater rep = (EnhancedRepeater) repeater;
    rep.doPageSave();
    Pointer ptr = jxpc.getPointer(super.getRepeaterPath());
    JXPathContext repeaterContext = jxpc.getRelativeContext(ptr);
    RepeaterJXPathCollection collection = rep.getCollection();
    // iterate updated rows. note: we don't iterate over the whole context
    for (Iterator iter = collection.getUpdatedRows().iterator(); iter.hasNext();) {
        RepeaterItem item = (RepeaterItem) iter.next();
        Repeater.RepeaterRow thisRow = item.getRow();
        // Get the identity
        List identity = getIdentity(thisRow);
        if (hasNonNullElements(identity)) {
            // iterate nodes to find match
            Iterator rowPointers = repeaterContext.iteratePointers(getRowPath());
            while (rowPointers.hasNext()) {
                Pointer jxp = (Pointer) rowPointers.next();
                JXPathContext rowContext = repeaterContext.getRelativeContext(jxp);
                List contextIdentity = getIdentity(rowContext);
                if (ListUtils.isEqualList(identity, contextIdentity)) {
                    getRowBinding().saveFormToModel(thisRow, rowContext);
                    break;
                }
            }
        } else {
            getRowBinding().saveFormToModel(thisRow, item.getContext().getContextPointer());
        }
    }

    for (Iterator iter = collection.getDeletedRows().iterator(); iter.hasNext();) {
        RepeaterItem item = (RepeaterItem) iter.next();
        jxpc.removePath(item.getContext().createPath(".").asPath());
    }

    // insert rows
    int indexCount = collection.getOriginalCollectionSize() - collection.getDeletedRows().size();
    for (Iterator iter = collection.getInsertedRows().iterator(); iter.hasNext();) {
        indexCount++;
        RepeaterItem item = (RepeaterItem) iter.next();

        // Perform the insert row binding.
        if (getInsertRowBinding() != null) {
            getInsertRowBinding().saveFormToModel(item.getRow(), repeaterContext);
        }
        // -->  create the path to let the context be created
        Pointer newRowContextPointer = repeaterContext
                .createPath(super.getInsertRowPath() + "[" + indexCount + "]");
        JXPathContext newRowContext = repeaterContext.getRelativeContext(newRowContextPointer);
        //    + rebind to children for update
        super.getRowBinding().saveFormToModel(item.getRow(), newRowContext);
    }
}

---

From source file:org.apache.cocoon.forms.binding.MultiValueJXPathBinding.java

public void doSave(Widget frmModel, JXPathContext jctx) throws BindingException {
    Widget widget = selectWidget(frmModel, this.multiValueId);
    Object[] values = (Object[]) widget.getValue();

    JXPathContext multiValueContext = jctx.getRelativeContext(jctx.createPath(this.multiValuePath));

    // Delete all that is already present

    // Unfortunately the following statement doesn't work (it doesn't removes all elements from the 
    // list because of a bug in JXPath I wasn't able to locate).
    //multiValueContext.removeAll(this.rowPath);

    // TODO: This is a workaround until the bug in commons-jxpath is found, fixed and released
    Iterator rowPointers = multiValueContext.iteratePointers(this.rowPath);
    int cnt = 0;//  w  w  w  . j av a  2  s  . com
    while (rowPointers.hasNext()) {
        cnt++;
        rowPointers.next();
    }
    while (cnt >= 1) {
        String thePath = this.rowPath + "[" + cnt + "]";
        multiValueContext.removePath(thePath);
        cnt--;
    }

    boolean update = false;

    if (values != null) {
        // first update the values
        for (int i = 0; i < values.length; i++) {
            String path = this.rowPath + '[' + (i + 1) + ']';
            Pointer rowPtr = multiValueContext.createPath(path);

            Object value = values[i];
            if (value != null && convertor != null) {
                value = convertor.convertToString(value, convertorLocale, null);
            }

            rowPtr.setValue(value);
        }

        // now perform any other bindings that need to be performed when the value is updated
        this.updateBinding.saveFormToModel(frmModel, multiValueContext);

        update = true;
    }

    if (getLogger().isDebugEnabled()) {
        getLogger().debug("done saving " + toString() + " -- on-update == " + update);
    }

}

---

From source file:org.apache.cocoon.forms.binding.ValueJXPathBinding.java

/**
 * Actively performs the binding from the CForms-form to the ObjectModel
 * wrapped in a jxpath context/*from   ww w  .  j a v a 2 s.  co  m*/
 */
public void doSave(Widget frmModel, JXPathContext jxpc) throws BindingException {
    Widget widget = selectWidget(frmModel, this.fieldId);
    Object value = widget.getValue();
    if (value != null && convertor != null) {
        value = convertor.convertToString(value, convertorLocale, null);
    }

    Object oldValue = jxpc.getValue(this.xpath);
    if (getLogger().isDebugEnabled()) {
        getLogger().debug("value= " + value + "-- oldvalue=" + oldValue);
    }

    boolean update = false;

    if ((value == null && oldValue != null) || value != null && !value.equals(oldValue)) {
        // first update the value itself
        if (value != null) {
            jxpc.createPathAndSetValue(this.xpath, value);
        } else {
            jxpc.removePath(this.xpath);
        }

        // now perform any other bindings that need to be performed when the value is updated
        JXPathContext subContext = null;
        try {
            subContext = jxpc.getRelativeContext(jxpc.getPointer(this.xpath));
        } catch (JXPathException e) {
            // if the value has been set to null and the underlying model is a bean, then
            // JXPath will not be able to create a relative context
            if (getLogger().isDebugEnabled()) {
                getLogger().debug("(Ignorable) problem binding field " + widget.getRequestParameterName(), e);
            }
        }
        if (subContext != null) {
            this.updateBinding.saveFormToModel(frmModel, subContext);
        }

        update = true;
    }

    if (getLogger().isDebugEnabled()) {
        getLogger().debug("done saving " + toString() + " -- value= " + value + " -- on-update == " + update);
    }
}

---