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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,37 @@ | ||
| /* | ||
| * Copyright 2017 dmfs GmbH | ||
| * | ||
| * 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. | ||
| */ | ||
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| package org.dmfs.tasks.utils; | ||
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| import org.dmfs.jems.single.Single; | ||
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| import java.util.Iterator; | ||
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| /** | ||
| * A Fragile is similar to a {@link Single} but it may throw an {@link Exception} during retrieval of the value. | ||
| * <p> | ||
| * It's primary use case is to allow deferring checked Exceptions if they can't be thrown right away. A common example is Iterating elements, {@link | ||
| * Iterator#next()} doesn't allow checked Exceptions to be thrown. In this case a {@link Fragile} can be returned to defer any exception to evaluation time. | ||
| * | ||
| * @author Marten Gajda | ||
| * @deprecated use it from jems when available | ||
| */ | ||
| @Deprecated | ||
| public interface Fragile<T, E extends Throwable> | ||
| { | ||
| T value() throws E; | ||
| } |
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opentasks/src/main/java/org/dmfs/tasks/utils/ValidatingUri.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| /* | ||
| * Copyright 2017 dmfs GmbH | ||
| * | ||
| * 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. | ||
| */ | ||
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| package org.dmfs.tasks.utils; | ||
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| import android.net.Uri; | ||
| import android.support.annotation.Nullable; | ||
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| import java.net.URI; | ||
| import java.net.URISyntaxException; | ||
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| /** | ||
| * A {@link Fragile} to create a valid {@link Uri} from a {@link Nullable} {@link CharSequence}. | ||
| * <p> | ||
| * Throws {@link URISyntaxException} for invalid or <code>null</code> or empty input. | ||
| * | ||
| * @author Gabor Keszthelyi | ||
| */ | ||
| public final class ValidatingUri implements Fragile<Uri, URISyntaxException> | ||
| { | ||
| private final CharSequence mUriCandidate; | ||
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| public ValidatingUri(@Nullable CharSequence uriCandidate) | ||
| { | ||
| mUriCandidate = uriCandidate; | ||
| } | ||
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| @Override | ||
| public Uri value() throws URISyntaxException | ||
| { | ||
| if (mUriCandidate == null) | ||
| { | ||
| throw new URISyntaxException("null", "Uri input cannot be null"); | ||
| } | ||
| if (mUriCandidate.length() == 0) | ||
| { | ||
| throw new URISyntaxException("", "Uri input cannot be empty"); | ||
| } | ||
| return Uri.parse(new URI(mUriCandidate.toString()).toString()); | ||
| } | ||
| } |
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