FileDocCategorySizeDatePackage
Arrays.javaAPI DocApache Tomcat 6.0.148270Fri Jul 20 04:20:34 BST 2007org.apache.catalina.tribes.util

Arrays

public class Arrays extends Object
author
Filip Hanik
version
1.0

Fields Summary
protected static org.apache.juli.logging.Log
log
Constructors Summary
Methods Summary
public static intadd(int[] data)

        int result = 0;
        for (int i=0;i<data.length; i++ ) result += data[i];
        return result;
    
public static booleancontains(byte[] source, int srcoffset, byte[] key, int keyoffset, int length)

    
                 
        if ( srcoffset < 0 || srcoffset >= source.length) throw new ArrayIndexOutOfBoundsException("srcoffset is out of bounds.");
        if ( keyoffset < 0 || keyoffset >= key.length) throw new ArrayIndexOutOfBoundsException("keyoffset is out of bounds.");
        if ( length > (key.length-keyoffset) ) throw new ArrayIndexOutOfBoundsException("not enough data elements in the key, length is out of bounds.");
        //we don't have enough data to validate it
        if ( length > (source.length-srcoffset) ) return false;
        boolean match = true;
        int pos = keyoffset;
        for ( int i=srcoffset; match && i<length; i++ ) {
            match = (source[i] == key[pos++]);
        }
        return match;
    
public static byte[]convert(java.lang.String s)

        try {
            return s.getBytes("ISO-8859-1");
        }catch (UnsupportedEncodingException ux ) {
            log.error("Unable to convert ["+s+"] into a byte[] using ISO-8859-1 encoding, falling back to default encoding.");
            return s.getBytes();
        }
    
public static org.apache.catalina.tribes.Member[]diff(org.apache.catalina.tribes.membership.Membership complete, org.apache.catalina.tribes.membership.Membership local, org.apache.catalina.tribes.membership.MemberImpl ignore)

        ArrayList result = new ArrayList();
        MemberImpl[] comp = complete.getMembers();
        for ( int i=0; i<comp.length; i++ ) {
            if ( ignore!=null && ignore.equals(comp[i]) ) continue;
            if ( local.getMember(comp[i]) == null ) result.add(comp[i]);
        }
        return (MemberImpl[])result.toArray(new MemberImpl[result.size()]);
    
public static booleanequals(byte[] o1, byte[] o2)

        return java.util.Arrays.equals(o1,o2);
    
public static booleanequals(java.lang.Object[] o1, java.lang.Object[] o2)

        boolean result = o1.length == o2.length;
        if ( result ) for (int i=0; i<o1.length && result; i++ ) result = o1[i].equals(o2[i]);
        return result;
    
public static org.apache.catalina.tribes.Member[]extract(org.apache.catalina.tribes.Member[] all, org.apache.catalina.tribes.Member[] remove)

        List alist = java.util.Arrays.asList(all);
        ArrayList list = new ArrayList(alist);
        for (int i=0; i<remove.length; i++ ) list.remove(remove[i]);
        return (Member[])list.toArray(new Member[list.size()]);
    
public static voidfill(org.apache.catalina.tribes.membership.Membership mbrship, org.apache.catalina.tribes.Member[] m)

        for (int i=0; i<m.length; i++ ) mbrship.addMember((MemberImpl)m[i]);
    
public static byte[]fromString(java.lang.String value)

 
        if ( value == null ) return null;
        if ( !value.startsWith("{") ) throw new RuntimeException("byte arrays must be represented as {1,3,4,5,6}");
        StringTokenizer t = new StringTokenizer(value,"{,}",false);
        byte[] result = new byte[t.countTokens()];
        for (int i=0; i<result.length; i++ ) result[i] = Byte.parseByte(t.nextToken());
        return result;
    
public static org.apache.catalina.tribes.UniqueIdgetUniqudId(byte[] data)

        return new UniqueId(data);
    
public static org.apache.catalina.tribes.UniqueIdgetUniqudId(org.apache.catalina.tribes.ChannelMessage msg)

        return new UniqueId(msg.getUniqueId());
    
public static inthashCode(byte[] a)

        if (a == null)
            return 0;

        int result = 1;
        for (int i=0; i<a.length; i++) {
            byte element = a[i];
            result = 31 * result + element;
        }
        return result;
    
public static intindexOf(org.apache.catalina.tribes.Member member, org.apache.catalina.tribes.Member[] members)

        int result = -1;
        for (int i=0; (result==-1) && (i<members.length); i++ ) 
            if ( member.equals(members[i]) ) result = i;
        return result;
    
public static org.apache.catalina.tribes.Member[]merge(org.apache.catalina.tribes.Member[] m1, org.apache.catalina.tribes.Member[] m2)

        AbsoluteOrder.absoluteOrder(m1);
        AbsoluteOrder.absoluteOrder(m2);
        ArrayList list = new ArrayList(java.util.Arrays.asList(m1));
        for (int i=0; i<m2.length; i++) if ( !list.contains(m2[i]) ) list.add(m2[i]);
        Member[] result = new Member[list.size()];
        list.toArray(result);
        AbsoluteOrder.absoluteOrder(result);
        return result;
    
public static intnextIndex(org.apache.catalina.tribes.Member member, org.apache.catalina.tribes.Member[] members)

        int idx = indexOf(member,members)+1;
        if (idx >= members.length ) idx = ((members.length>0)?0:-1);
        
//System.out.println("Next index:"+idx);
//System.out.println("Member:"+member.getName());
//System.out.println("Members:"+toNameString(members));
        return idx;
    
public static org.apache.catalina.tribes.Member[]remove(org.apache.catalina.tribes.Member[] all, org.apache.catalina.tribes.Member remove)

        return extract(all,new Member[] {remove});
    
public static booleansameMembers(org.apache.catalina.tribes.Member[] m1, org.apache.catalina.tribes.Member[] m2)

        AbsoluteOrder.absoluteOrder(m1);
        AbsoluteOrder.absoluteOrder(m2);
        return equals(m1,m2);
    
public static java.lang.StringtoNameString(org.apache.catalina.tribes.Member[] data)

        return toNameString(data,0,data!=null?data.length:0);
    
public static java.lang.StringtoNameString(org.apache.catalina.tribes.Member[] data, int offset, int length)

        StringBuffer buf = new StringBuffer("{");
        if ( data != null && length > 0 ) {
            buf.append(data[offset++].getName());
            for (int i = offset; i < length; i++) {
                buf.append(", ").append(data[i].getName());
            }
        }
        buf.append("}");
        return buf.toString();
    
public static java.lang.StringtoString(byte[] data)

        return toString(data,0,data!=null?data.length:0);
    
public static java.lang.StringtoString(byte[] data, int offset, int length)

        StringBuffer buf = new StringBuffer("{");
        if ( data != null && length > 0 ) {
            buf.append(data[offset++]);
            for (int i = offset; i < length; i++) {
                buf.append(", ").append(data[i]);
            }
        }
        buf.append("}");
        return buf.toString();
    
public static java.lang.StringtoString(java.lang.Object[] data)

        return toString(data,0,data!=null?data.length:0);
    
public static java.lang.StringtoString(java.lang.Object[] data, int offset, int length)

        StringBuffer buf = new StringBuffer("{");
        if ( data != null && length > 0 ) {
            buf.append(data[offset++]);
            for (int i = offset; i < length; i++) {
                buf.append(", ").append(data[i]);
            }
        }
        buf.append("}");
        return buf.toString();