org.apache.ignite.internal.cache.query.index.sorted

Interface IndexRowComparator

All Known Implementing Classes:

IndexRowComparatorImpl

public interface IndexRowComparator

Comparator for index rows.

Method Summary

Modifier and Type	Method and Description
int	compareKey(IndexKey left, IndexKey right) Compare index keys.
int	compareKey(long pageAddr, int off, int maxSize, IndexKey key, InlineIndexKeyType type) Compare inlined index key with specified key.
int	compareRow(IndexRow left, IndexRow right, int idx) Compare index rows by key specified with idx.

Method Detail

compareKey

int compareKey(long pageAddr,
               int off,
               int maxSize,
               IndexKey key,
               InlineIndexKeyType type)
        throws IgniteCheckedException

Compare inlined index key with specified key. If it is impossible to compare inlined key, it returns special vals: COMPARE_UNSUPPORTED and CANT_BE_COMPARE, see NullableInlineIndexKeyType.

Parameters:

pageAddr - address of an index row.

off - offset of an index key.

maxSize - max size to read.

key - key to compare with.

type - inline type of index key.

Throws:

IgniteCheckedException

compareKey

int compareKey(IndexKey left,
               IndexKey right)
        throws IgniteCheckedException

Compare index keys.

Parameters:

left - index key.

right - index key.

Throws:

IgniteCheckedException

compareRow

int compareRow(IndexRow left,
               IndexRow right,
               int idx)
        throws IgniteCheckedException

Compare index rows by key specified with idx.

Parameters:

left - index row.

right - index row.

idx - offset of index key.

Throws:

IgniteCheckedException