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From zentol <...@git.apache.org>
Subject [GitHub] incubator-flink pull request: Serialized String comparison, Unicod...
Date Wed, 18 Jun 2014 21:37:20 GMT
Github user zentol commented on the pull request:

    https://github.com/apache/incubator-flink/pull/4#issuecomment-46497746
  
    the loop could look like that right now, the encoding scheme wouldn't need to be changed.
    
    if you want it character wise you could have something like this
    ```
    ...
    for (int i = 0; i < Math.min(lengthFirst, lengthSecond); i++) {			
    	byte[] char1 = readUnicodeCharAsByteArray(firstSource);
    	byte[] char2 = readUnicodeCharAsByteArray(secondSource);
    	
    	int len = Math.min(char1.length, char2.length);
    	int cmp = 0;
    	for (int pos = 0; pos < len && (cmp = (char1[pos] - char2[pos])) == 0; pos++);
    	if (cmp != 0) {
    		return cmp;		
    	}
    }
    ...
    ```
    if you want to read the whole string it would look like this
    ```
    ...
    byte[] string1 = readUnicodeStringAsByteArray(firstSource);
    byte[] string2 = readUnicodeStringAsByteArray(secondSource)
    
    int len = Math.min(string1.length, string2.length);
    int cmp = 0;
    for (int pos = 0; pos < len && (cmp = (string1[pos] - string2[pos])) == 0;
pos++);
    if (cmp != 0) {
    	return cmp;		
    }
    ...
    ```
    the string part can easily be split into several smaller parts.


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