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Use predicates to specify records to accept or ignore.

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This commit is contained in:
akwizgran
2019-04-08 18:13:26 +01:00
parent 9ce71088e2
commit cc49648e37
9 changed files with 263 additions and 223 deletions
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9
bramble-api/src/main/java/org/briarproject/bramble/api/Predicate.java Normal file
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@@ -0,0 +1,9 @@
package org.briarproject.bramble.api;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
@NotNullByDefault
public interface Predicate<T> {
boolean test(T t);
}

19
bramble-api/src/main/java/org/briarproject/bramble/api/record/RecordReader.java
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@@ -1,10 +1,14 @@
package org.briarproject.bramble.api.record;
import org.briarproject.bramble.api.FormatException;
import org.briarproject.bramble.api.Predicate;
import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
import java.io.EOFException;
import java.io.IOException;
import javax.annotation.Nullable;
@NotNullByDefault
public interface RecordReader {
@@ -16,5 +20,20 @@ public interface RecordReader {
*/
Record readRecord() throws IOException;
/**
* Reads and returns the next record matching the 'accept' predicate,
* skipping any records that match the 'ignore' predicate. Returns null if
* no record matching the 'accept' predicate is found before the end of the
* stream.
*
* @throws EOFException If the end of the stream is reached without
* reading a complete record
* @throws FormatException If a record is read that does not match the
* 'accept' or 'ignore' predicates
*/
@Nullable
Record readRecord(Predicate<Record> accept, Predicate<Record> ignore)
throws IOException;
void close() throws IOException;
}