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ContentStringResolver.java
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56 lines (48 loc) · 1.58 KB
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package act.data;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
import act.util.NoAutoRegister;
import org.osgl.storage.ISObject;
import org.osgl.util.IO;
import org.osgl.util.StringValueResolver;
import static act.data.annotation.ReadContent.ATTR_MERCY;
/**
* Read content as string from resource URL
*/
@NoAutoRegister
public class ContentStringResolver extends StringValueResolver<String> {
public static final ContentStringResolver INSTANCE = new ContentStringResolver();
@Override
public String resolve(String value) {
try {
ISObject sobj = SObjectResolver.INSTANCE.resolve(value);
return null == sobj ? fallBack(value) : IO.readContentAsString(sobj.asInputStream());
} catch (Exception e) {
return fallBack(value);
}
}
private String fallBack(String value) {
Boolean mercy = attribute(ATTR_MERCY);
if (null == mercy) {
mercy = false;
}
return mercy ? value : null;
}
}