// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.db;

import org.litesoft.commonfoundation.base.*;

public class DBtableIndex {
    private String mIndexName;
    private boolean mUnique;
    private String[] mColumnNames;

    public DBtableIndex( String pIndexName, boolean pUnique, String... pColumnNames ) {
        mIndexName = Confirm.significant( "IndexName", pIndexName );
        mUnique = pUnique;
        mColumnNames = Confirm.notNullNotEmptyAllSignificant( "ColumnNames", pColumnNames );
    }

    public String getIndexName() {
        return mIndexName;
    }

    public boolean isUnique() {
        return mUnique;
    }

    public String[] getColumnNames() {
        return mColumnNames;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append( mIndexName );
        if ( mUnique ) {
            sb.append( "(Unique)" );
        }
        String zPrefix = ": ";
        for ( String zColumnName : mColumnNames ) {
            sb.append( zPrefix ).append( zColumnName );
            zPrefix = ", ";
        }
        return sb.toString();
    }
}