org.neo4j.kernel.api.impl.schema.verification

Interface UniquenessVerifier

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

PartitionedUniquenessVerifier, SimpleUniquenessVerifier

public interface UniquenessVerifier
extends Closeable

A component that verifies uniqueness of values in a lucene index. During uniqueness constraint creation we ensure that already existing data is unique using verify(PropertyAccessor, int). Since updates can be applied while index is being populated we need to verify them as well. Verification does not handle that automatically. They need to be collected in some way and then checked by verify(PropertyAccessor, int, List).

Method Summary

Modifier and Type	Method and Description
void	verify(org.neo4j.kernel.api.index.PropertyAccessor accessor, int propKeyId) Verifies uniqueness of existing data.
void	verify(org.neo4j.kernel.api.index.PropertyAccessor accessor, int propKeyId, List<Object> updatedPropertyValues) Verifies uniqueness of given values and existing data.

Methods inherited from interface java.io.Closeable

close

Method Detail

verify

void verify(org.neo4j.kernel.api.index.PropertyAccessor accessor,
            int propKeyId)
     throws org.neo4j.kernel.api.exceptions.index.IndexEntryConflictException,
            IOException

Verifies uniqueness of existing data.

Parameters:

accessor - the accessor to retrieve actual property values from the store.

propKeyId - the id of the property to verify.

Throws:

org.neo4j.kernel.api.exceptions.index.IndexEntryConflictException - if there are duplicates.

IOException - when Lucene throws IOException.

verify

void verify(org.neo4j.kernel.api.index.PropertyAccessor accessor,
            int propKeyId,
            List<Object> updatedPropertyValues)
     throws org.neo4j.kernel.api.exceptions.index.IndexEntryConflictException,
            IOException

Verifies uniqueness of given values and existing data.

Parameters:

accessor - the accessor to retrieve actual property values from the store.

propKeyId - the id of the property to verify.

updatedPropertyValues - the values to check uniqueness for.

Throws:

org.neo4j.kernel.api.exceptions.index.IndexEntryConflictException - if there are duplicates.

IOException - when Lucene throws IOException.