/* * The MIT License * * Copyright 2014 Karol Bucek. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package arjdbc.util; import java.util.WeakHashMap; import org.jruby.Ruby; import org.jruby.RubyString; import org.jruby.runtime.ThreadContext; import org.jruby.util.ByteList; /** * Cache of _unicode_ strings. * * @author kares */ public final class StringCache { final WeakHashMap cache = new WeakHashMap(64); public RubyString get(final ThreadContext context, final String key) { final ByteList bytes = cache.get(key); if ( bytes == null ) return store(context, key); final Ruby runtime = context.runtime; return (RubyString) RubyString.newString(runtime, bytes).freeze(context); } private RubyString store(final ThreadContext context, final String key) { final Ruby runtime = context.runtime; final RubyString str = RubyString.newUnicodeString(runtime, key); synchronized (cache) { cache.put(key, str.getByteList()); } return (RubyString) str.freeze(context); } public void clear() { cache.clear(); } }