labelresourceimpl.java

来自「xbrlapi的源码」· Java 代码 · 共 59 行

package org.xbrlapi.impl;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xbrlapi.LabelResource;
import org.xbrlapi.utilities.XBRLException;

/**
 * @author Geoffrey Shuetrim ([e-mail])
 * TODO Find out why XPointer metadata does not include the id for label resources.
 */

public class LabelResourceImpl extends MixedContentResourceImpl implements LabelResource {

	/**
	 * Get the value of the XHTML resource as a text string,
	 * @return the value of the XHTML resource as a text string
	 * with the XHTML markup replaced by spaces and with leading, trailing
	 * and double spaces removed.
	 * @throws XBRLException
	 * @see org.xbrlapi.LabelResource#getStringValue()
	 */
	public String getStringValue() throws XBRLException {
		String value = "";
		NodeList nodes = getContent();
		for (int i=0; i<nodes.getLength(); i++) {
			Node node = nodes.item(i);
			if (node.getNodeType() == Node.TEXT_NODE) value = value + " " + node.getTextContent().trim() + " ";
			if (node.getNodeType() == Node.ELEMENT_NODE) value = value + getStringValue((Element) node);			
		}
		
        Pattern pattern = Pattern.compile("\\s+");
        Matcher matcher = pattern.matcher(value);
        return matcher.replaceAll(" ").trim();
	}
	
	/**
	 * @param element The element at the top of the markup to be converted to a string.
	 * @return the string value from an element contained in the XHTML markup content,
	 * eliminating the markup itself.
	 * @throws XBRLException
	 */
	private String getStringValue(Element element) throws XBRLException {
		String value = "";
		NodeList nodes = element.getChildNodes();
		for (int i=0; i<nodes.getLength(); i++) {
			Node node = nodes.item(i);
			if (node.getNodeType() == Node.TEXT_NODE) value = value + node.getTextContent();
			else if (node.getNodeType() == Node.ELEMENT_NODE) value = value + getStringValue((Element) node);
		}
		return " " + value.trim() + " ";
	}	
	
}