org.apache.kahadb.index: public static class: BTreeIndex.StringPrefixer

org.apache.kahadb.index
public static class: BTreeIndex.StringPrefixer [javadoc | source]

java.lang.Object
   org.apache.kahadb.index.BTreeIndex$StringPrefixer

All Implemented Interfaces:
Prefixer

StringPrefixer is a Prefixer implementation that works on strings.

Method from org.apache.kahadb.index.BTreeIndex$StringPrefixer Summary:
getSimplePrefix

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.kahadb.index.BTreeIndex$StringPrefixer Detail:
public String getSimplePrefix(String value1, String value2) { char[] c1 = value1.toCharArray(); char[] c2 = value2.toCharArray(); int n = Math.min(c1.length, c2.length); int i =0; while (i < n) { if (c1[i] != c2[i]) { return value2.substring(0,i+1); } i++; } if( n == c2.length ) { return value2; } return value2.substring(0,n); } Example: If value1 is "Hello World" and value 2 is "Help Me" then the result will be: "Help"

Method from org.apache.kahadb.index.BTreeIndex$StringPrefixer Detail:

 public String getSimplePrefix(String value1,
    String value2) {
            char[] c1 = value1.toCharArray();
            char[] c2 = value2.toCharArray();
            int n = Math.min(c1.length, c2.length);
            int i =0;
            while (i <  n) {
                if (c1[i] != c2[i]) {
                    return value2.substring(0,i+1);
                }
                i++;
            }
            if( n == c2.length ) {
                return value2;
            }
            return value2.substring(0,n);
}

Example: If value1 is "Hello World" and value 2 is "Help Me" then the result will be: "Help"