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package org.bouncycastle.cms;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
public class SignerInformationStore
{
private List all = new ArrayList();
private Map table = new HashMap();
public SignerInformationStore(
Collection signerInfos)
{
Iterator it = signerInfos.iterator();
while (it.hasNext())
{
SignerInformation signer = (SignerInformation)it.next();
SignerId sid = signer.getSID();
List list = (ArrayList)table.get(sid);
if (list == null)
{
list = new ArrayList(1);
table.put(sid, list);
}
list.add(signer);
}
this.all = new ArrayList(signerInfos);
}
/**
* Return the first SignerInformation object that matches the
* passed in selector. Null if there are no matches.
*
* @param selector to identify a signer
* @return a single SignerInformation object. Null if none matches.
*/
public SignerInformation get(
SignerId selector)
{
Collection list = getSigners(selector);
return list.size() == 0 ? null : (SignerInformation) list.iterator().next();
}
/**
* Return the number of signers in the collection.
*
* @return number of signers identified.
*/
public int size()
{
return all.size();
}
/**
* Return all signers in the collection
*
* @return a collection of signers.
*/
public Collection getSigners()
{
return new ArrayList(all);
}
/**
* Return possible empty collection with signers matching the passed in SignerId
*
* @param selector a signer id to select against.
* @return a collection of SignerInformation objects.
*/
public Collection getSigners(
SignerId selector)
{
if (selector.getIssuer() != null && selector.getSubjectKeyIdentifier() != null)
{
List results = new ArrayList();
Collection match1 = getSigners(new SignerId(selector.getIssuer(), selector.getSerialNumber()));
if (match1 != null)
{
results.addAll(match1);
}
Collection match2 = getSigners(new SignerId(selector.getSubjectKeyIdentifier()));
if (match2 != null)
{
results.addAll(match2);
}
return results;
}
else
{
List list = (ArrayList)table.get(selector);
return list == null ? new ArrayList() : new ArrayList(list);
}
}
}
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