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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Locale;
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import android.app.Activity;
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public class ContactsCache
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* A thing that can be used to identify (or lookup) a contact within the
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* contacts cache. It is not a reference to a cache entry and may not
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* identify an existing contact in the cache.
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* Information that can be used to identify a contact within the cache
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public static class CacheIdentifier
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static public class CacheIdentifier
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public enum Type { NAME, ORGANISATION, PRIMARY_NUMBER, PRIMARY_EMAIL }
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NONE, NAME, ORGANISATION, PRIMARY_NUMBER, PRIMARY_EMAIL }
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private Type _type;
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private String _detail;
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* Obtain a cache identifier. This routine is designed to be as robust
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* as possible (in terms of bad or null detail values), and to return
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* null when a cache identifier can not be created.
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* @param type the detail type
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* @param detail the detail
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* @return the cache identifier, or null
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public static CacheIdentifier factory( Type type, String detail )
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case NAME: detail = normaliseName( detail ); break;
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case ORGANISATION: detail = normaliseOrganisation( detail ); break;
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case PRIMARY_NUMBER: detail = normalisePhoneNumber( detail ); break;
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case PRIMARY_EMAIL: detail = normaliseEmailAddress( detail ); break;
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if( detail == null ) return null;
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return new CacheIdentifier( type, detail );
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* Obtain a cache identifier from contact data. This routine is
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* designed to be as robust as possible and may return null when a cache
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* identifier can not be created.
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* @param contact the contact data
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* @return the cache identifier, or null
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public static CacheIdentifier factory( Importer.ContactData contact )
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CacheIdentifier identifier = null;
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if( contact.hasName() )
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identifier = factory( CacheIdentifier.Type.NAME,
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if( identifier != null ) return identifier;
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if( contact.hasPrimaryOrganisation() )
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identifier = factory( CacheIdentifier.Type.ORGANISATION,
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contact.getPrimaryOrganisation() );
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if( identifier != null ) return identifier;
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if( contact.hasPrimaryNumber() )
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identifier = factory( CacheIdentifier.Type.PRIMARY_NUMBER,
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contact.getPrimaryNumber() );
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if( identifier != null ) return identifier;
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if( contact.hasPrimaryEmail() )
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identifier = factory( CacheIdentifier.Type.PRIMARY_EMAIL,
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contact.getPrimaryEmail() );
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if( identifier != null ) return identifier;
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protected CacheIdentifier()
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protected CacheIdentifier( Type type, String detail )
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= new HashMap< Long, HashSet< String > >();
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private HashMap< Long, HashSet< String > > _contactOrganisations
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= new HashMap< Long, HashSet< String > >();
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private HashMap< Long, HashSet< String > > _contactNotes
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= new HashMap< Long, HashSet< String > >();
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// _contactsByName = new HashMap< String, Long >();
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// _contactsByOrg = new HashMap< String, Long >();
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// _contactsByNumber = new HashMap< String, Long >();
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// _contactsByEmail = new HashMap< String, Long >();
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// init associated data cache
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// _contactNumbers = new HashMap< Long, HashSet< String > >();
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// _contactEmails = new HashMap< Long, HashSet< String > >();
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// _contactAddresses = new HashMap< Long, HashSet< String > >();
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// _contactOrganisations = new HashMap< Long, HashSet< String > >();
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public static CacheIdentifier createIdentifier(
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Importer.ContactData contact )
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if( contact.hasName() ) {
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String name = normaliseName( contact.getName() );
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return new CacheIdentifier(
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CacheIdentifier.Type.NAME, name );
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if( contact.hasPrimaryOrganisation() ) {
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String organisation = normaliseOrganisation(
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contact.getPrimaryOrganisation() );
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if( organisation != null )
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return new CacheIdentifier(
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CacheIdentifier.Type.ORGANISATION, organisation );
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if( contact.hasPrimaryNumber() ) {
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String number = normalisePhoneNumber( contact.getPrimaryNumber() );
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return new CacheIdentifier(
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CacheIdentifier.Type.PRIMARY_NUMBER, number );
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if( contact.hasPrimaryEmail() ) {
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String email = normaliseEmailAddress( contact.getPrimaryEmail() );
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return new CacheIdentifier(
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CacheIdentifier.Type.PRIMARY_EMAIL, email );
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public boolean canLookup( CacheIdentifier identifier )
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return lookup( identifier ) != null;
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* Retrieve the contact id of a contact identified by the specified cache
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* identifier, if it exists.
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* @param identifier the cache identifier
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* @return a contact id, or null
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public Long lookup( CacheIdentifier identifier )
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switch( identifier.getType() )
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* Remove any data that is associated with an contact id.
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public void removeAssociatedData( Long id )
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_contactNumbers.remove( id );
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_contactEmails.remove( id );
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_contactAddresses.remove( id );
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_contactOrganisations.remove( id );
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_contactNotes.remove( id );
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public boolean hasAssociatedNumber( Long id, String number )
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set = new HashSet< String >();
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_contactOrganisations.put( id, set );
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set.add( organisation );
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public boolean hasAssociatedNote( Long id, String note )
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note = normaliseNote( note );
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if( note == null ) return false;
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HashSet< String > set = _contactNotes.get( id );
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return set != null && set.contains( note );
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public void addAssociatedNote( Long id, String note )
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note = normaliseNote( note );
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if( note == null ) return;
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HashSet< String > set = _contactNotes.get( id );
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set = new HashSet< String >();
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_contactNotes.put( id, set );
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set.add( normaliseOrganisation( organisation ) );
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static public String normaliseName( String name )