Package org.apache.jackrabbit.oak.plugins.index.property.strategy

Interface IndexStoreStrategy

All Known Implementing Classes:

ContentMirrorStoreStrategy, FilteringIndexStoreStrategy, UniqueEntryStoreStrategy

public interface IndexStoreStrategy

Strategy that defines how the index content will be actually stored under the index node

Method Summary

Modifier and Type	Method	Description
long	count(Filter filter, NodeState root, NodeState indexMeta, Set<String> values, int max)	Count the occurrence of a given set of values.
long	count(NodeState root, NodeState indexMeta, Set<String> values, int max)	Count the occurrence of a given set of values.
boolean	exists(Supplier<NodeBuilder> index, String key)	Check whether an entry for the given key exists.
String	getIndexNodeName()
Iterable<String>	query(Filter filter, String indexName, NodeState indexMeta, Iterable<String> values)	Search for a given set of values.
void	update(Supplier<NodeBuilder> index, String path, String indexName, NodeBuilder indexMeta, Set<String> beforeKeys, Set<String> afterKeys)	Updates the index for the given path.

Method Detail

update

void update(Supplier<NodeBuilder> index,
            String path,
            String indexName,
            NodeBuilder indexMeta,
            Set<String> beforeKeys,
            Set<String> afterKeys)
     throws CommitFailedException

Updates the index for the given path.

Parameters:

index - the index node supplier

path - path stored in the index

indexName - the name of the index. May be null.

indexMeta - the definition of the index. May be null.

beforeKeys - keys that no longer apply to the path

afterKeys - keys that now do apply to the path

Throws:

CommitFailedException

exists

boolean exists(Supplier<NodeBuilder> index,
               String key)

Check whether an entry for the given key exists.

Parameters:

index - the index node supplier

key - the key

Returns:

true if at least one entry exists

query

Iterable<String> query(Filter filter,
                       String indexName,
                       NodeState indexMeta,
                       Iterable<String> values)

Search for a given set of values.

Parameters:

filter - the filter (can optionally be used for optimized query execution)

indexName - the name of the index (for logging)

indexMeta - the index metadata node (may not be null)

values - values to look for (null to check for property existence)

Returns:

an iterator of paths

count

long count(NodeState root,
           NodeState indexMeta,
           Set<String> values,
           int max)

Count the occurrence of a given set of values. Used in calculating the cost of an index.

Parameters:

root - the root node (may not be null)

indexMeta - the index metadata node (may not be null)

values - values to look for (null to check for property existence)

max - the maximum value to return

Returns:

the aggregated count of occurrences for each provided value

count

long count(Filter filter,
           NodeState root,
           NodeState indexMeta,
           Set<String> values,
           int max)

Count the occurrence of a given set of values. Used in calculating the cost of an index.

Parameters:

filter - the filter which can be used to estimate better cost

root - the root node (may not be null)

indexMeta - the index metadata node (may not be null)

values - values to look for (null to check for property existence)

max - the maximum value to return

Returns:

the aggregated count of occurrences for each provided value

getIndexNodeName

String getIndexNodeName()