01: /*
02: * Copyright 2006 Google Inc.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License"); you may not
05: * use this file except in compliance with the License. You may obtain a copy of
06: * the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12: * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13: * License for the specific language governing permissions and limitations under
14: * the License.
15: */
16: package com.google.gwt.dev.util.xml;
17:
18: import com.google.gwt.core.ext.UnableToCompleteException;
19:
20: /**
21: * Converts from a string to the type needed.
22: */
23: public abstract class AttributeConverter {
24: /**
25: * Converts from a string to the type needed.
26: * Does not throw conversion-related exceptions.
27: * @param value
28: * the value to convert
29: * @param schema
30: * used to report conversion problems
31: * @return
32: * the argument converted to a form that is expected to compatible with
33: * the associated parameter and will work for a reflection "invoke()" call;
34: * <code>null</code> if the conversion failed.
35: */
36: public abstract Object convertToArg(Schema schema, int line,
37: String elem, String attr, String value)
38: throws UnableToCompleteException;
39: }
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