File	Doc	Category	Size	Date	Package
CollapsedStringAdapter.java	API Doc	Java SE 6 API	2999	Tue Jun 10 00:27:04 BST 2008	javax.xml.bind.annotation.adapters

CollapsedStringAdapter

• java.lang.Object
  • javax.xml.bind.annotation.adapters.XmlAdapter

Fields Summary

Constructors Summary

Methods Summary
protected static boolean	isWhiteSpace(char ch) returns true if the specified char is a white space character. // most of the characters are non-control characters. // so check that first to quickly return false for most of the cases. if( ch>0x20 ) return false; // other than we have to do four comparisons. return ch == 0x9 || ch == 0xA || ch == 0xD || ch == 0x20;
public java.lang.String	marshal(java.lang.String s) No-op. Just return the same string given as the parameter. return s;
public java.lang.String	unmarshal(java.lang.String text) Removes leading and trailing whitespaces of the string given as the parameter, then truncate any sequnce of tab, CR, LF, and SP by a single whitespace character ' '. if(text==null) return null; // be defensive int len = text.length(); // most of the texts are already in the collapsed form. // so look for the first whitespace in the hope that we will // never see it. int s=0; while(s<len) { if(isWhiteSpace(text.charAt(s))) break; s++; } if(s==len) // the input happens to be already collapsed. return text; // we now know that the input contains spaces. // let's sit down and do the collapsing normally. StringBuffer result = new StringBuffer(len /*allocate enough size to avoid re-allocation*/ ); if(s!=0) { for( int i=0; i<s; i++ ) result.append(text.charAt(i)); result.append(' "); } boolean inStripMode = true; for (int i = s+1; i < len; i++) { char ch = text.charAt(i); boolean b = isWhiteSpace(ch); if (inStripMode && b) continue; // skip this character inStripMode = b; if (inStripMode) result.append(' "); else result.append(ch); } // remove trailing whitespaces len = result.length(); if (len > 0 && result.charAt(len - 1) == ' ") result.setLength(len - 1); // whitespaces are already collapsed, // so all we have to do is to remove the last one character // if it's a whitespace. return result.toString();