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package org.openslx.runvirt.configuration;
import java.util.ArrayList;
public final class FilterManager<T, R>
{
private ArrayList<Filter<T, R>> filters;
private T config;
private R args;
public FilterManager( T config, R args )
{
this.filters = new ArrayList<Filter<T, R>>();
this.config = config;
this.args = args;
}
public void register( Filter<T, R> filter )
{
this.register( filter, true );
}
public void register( Filter<T, R> filter, boolean enabled )
{
filter.setEnabled( enabled );
this.filters.add( filter );
}
public void register( String name, FilterFunction<T, R> filterFunction )
{
this.register( name, filterFunction, true );
}
public void register( String name, FilterFunction<T, R> filterFunction, boolean enabled )
{
final Filter<T, R> filter = new Filter<T, R>( name ) {
@Override
public void filter( T document, R args ) throws FilterException
{
filterFunction.apply( document, args );
}
};
filter.setEnabled( enabled );
this.filters.add( filter );
}
public void filterAll() throws FilterException
{
for ( Filter<T, R> filter : this.filters ) {
try {
filter.apply( this.config, this.args );
} catch ( FilterException e ) {
final String errorMsg = new String(
"Error in configuration filter '" + filter.getName() + "':" + e.getLocalizedMessage() );
throw new FilterException( errorMsg );
}
}
}
private String showFilters()
{
String filterSummary = new String();
final int maxFilterNumCharacters = ( this.filters.size() + 1 ) / 10;
for ( int i = 0; i < this.filters.size(); i++ ) {
final Filter<T, R> filter = this.filters.get( i );
final String paddedNumber = String.format( "%-" + maxFilterNumCharacters + "s", i + 1 );
filterSummary += paddedNumber + ": " + filter.getName() + System.lineSeparator();
}
return filterSummary;
}
@Override
public String toString()
{
return this.showFilters();
}
}
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