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

Class InlineObjectBytesDetector

java.lang.Object

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

All Implemented Interfaces:

BPlusTree.TreeRowClosure<IndexRow,IndexRow>

public class InlineObjectBytesDetector
extends Object
implements BPlusTree.TreeRowClosure<IndexRow,IndexRow>

This class helps to detect whether tree contains inlined JO type. When starting on old Ignite versions it's impossible to discover whether JO type was inlined or not. Then try to find that with 2 steps: 1. analyze of inline size; 2. traverse tree and check stored values.

Constructor Summary

Constructors

Constructor and Description
InlineObjectBytesDetector(int inlineSize, List<IndexKeyDefinition> keyDefs, IndexName idxName, IgniteLogger log)

Method Summary

Modifier and Type	Method and Description
boolean	apply(BPlusTree<IndexRow,IndexRow> tree, BPlusIO<IndexRow> io, long pageAddr, int idx) Performs inspection or operation on a specified row and returns true if this row is required or matches or /operation successful (depending on the context).
boolean	inlineObjectSupported()
static boolean	objectMayBeInlined(int inlineSize, List<IndexKeyDefinition> keyDefs) Static analyze inline_size and inline columns set.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InlineObjectBytesDetector

public InlineObjectBytesDetector(int inlineSize,
                                 List<IndexKeyDefinition> keyDefs,
                                 IndexName idxName,
                                 IgniteLogger log)

Parameters:

inlineSize - Inline size.

keyDefs - Index key definitions.

idxName - Index name.

log - Ignite logger.

Method Detail

apply

public boolean apply(BPlusTree<IndexRow,IndexRow> tree,
                     BPlusIO<IndexRow> io,
                     long pageAddr,
                     int idx)
              throws IgniteCheckedException

Performs inspection or operation on a specified row and returns true if this row is required or matches or /operation successful (depending on the context).

Specified by:

apply in interface BPlusTree.TreeRowClosure<IndexRow,IndexRow>

Parameters:

tree - The tree.

io - Th tree IO object.

pageAddr - The page address.

idx - The item index.

Returns:

True if the item passes the predicate.

Throws:

IgniteCheckedException - If failed.

inlineObjectSupported

public boolean inlineObjectSupported()

Returns:

true if inline object is supported on current tree.

objectMayBeInlined

public static boolean objectMayBeInlined(int inlineSize,
                                         List<IndexKeyDefinition> keyDefs)

Static analyze inline_size and inline columns set. e.g.: indexed: (long, obj) and inline_size < 12. In this case there is no space for inline object.

Parameters:

keyDefs - Index key definition.

inlineSize - Inline size.

Returns:

true If the object may be inlined.