com.sun.xml.bind.v2.runtime.unmarshaller.IntArrayData Maven / Gradle / Ivy
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package com.sun.xml.bind.v2.runtime.unmarshaller;
import java.io.IOException;
import com.sun.xml.bind.v2.runtime.output.Pcdata;
import com.sun.xml.bind.v2.runtime.output.UTF8XmlOutput;
/**
* Typed {@link CharSequence} for int[].
*
*
* Fed to unmarshaller when the 'text' data is actually
* a virtual image of int array.
*
*
* This class holds int[] as a triplet of (data,start,len)
* where 'start' and 'len' represents the start position of the
* data and the length.
*
* @author Kohsuke Kawaguchi
*/
public final class IntArrayData extends Pcdata {
private int[] data;
private int start;
private int len;
/**
* String representation of the data. Lazily computed.
*/
private StringBuilder literal;
public IntArrayData(int[] data, int start, int len) {
set(data, start, len);
}
public IntArrayData() {
}
/**
* Sets the int[] data to this object.
*
*
* This method doesn't make a copy for a performance reason.
* The caller is still free to modify the array it passed to this method,
* but he should do so with a care. The unmarshalling code isn't expecting
* the value to be changed while it's being routed.
*/
public void set(int[] data, int start, int len) {
this.data = data;
this.start = start;
this.len = len;
this.literal = null;
}
public int length() {
return getLiteral().length();
}
public char charAt(int index) {
return getLiteral().charAt(index);
}
public CharSequence subSequence(int start, int end) {
return getLiteral().subSequence(start,end);
}
/**
* Computes the literal form from the data.
*/
private StringBuilder getLiteral() {
if(literal!=null) return literal;
literal = new StringBuilder();
int p = start;
for( int i=len; i>0; i-- ) {
if(literal.length()>0) literal.append(' ');
literal.append(data[p++]);
}
return literal;
}
public String toString() {
return literal.toString();
}
public void writeTo(UTF8XmlOutput output) throws IOException {
int p = start;
for( int i=len; i>0; i-- ) {
if(i!=len)
output.write(' ');
output.text(data[p++]);
}
}
}