com.sas.storage.olap
Class MetadataPerformanceTuning

com.sas.storage.olap.MetadataPerformanceTuning

public class MetadataPerformanceTuning

Metadata Performance Tuning Object defines the performance settings for OLAP metadata. The metadata model uses this information to make the remote calls more efficient by bringing over and storing the right amount of data. Each metadata model has a default PerformanceTuning object (with default values) associated with it.

See Also:

Metadata

Field Summary

static int	DEFAULT_BUFFERSIZE Default buffer or cache size for the member cache.
static int	DEFAULT_LOOKAHEAD Default look ahead size.
static int	DEFAULT_MAX_FILTERS Default number of filters to store in the cache

Constructor Summary

MetadataPerformanceTuning()
Create a default performance tuning object with default values.

MetadataPerformanceTuning(int bufferSize, int lookAhead, int maxFilters)
Create a performance tuning object with specified buffersize, lookAhead and maxFilters.

Method Summary

int	bufferSize() Get the buffersize set on the performance tuning object
int	lookAhead() Get the read ahead value.
int	maxFilters() Get the number of member filters to store in the cache
void	setCacheParms(int bufferSize, int lookAhead, int maxFilters) Set the cache properties
boolean	useCache() Check to see if the cache is being used or not.
void	useCache(boolean useCache) Set the flag to use the cache or not.

Field Detail

DEFAULT_BUFFERSIZE

public static final int DEFAULT_BUFFERSIZE

Default buffer or cache size for the member cache.

See Also:

Constant Field Values

DEFAULT_LOOKAHEAD

public static final int DEFAULT_LOOKAHEAD

Default look ahead size.

See Also:

Constant Field Values

DEFAULT_MAX_FILTERS

public static final int DEFAULT_MAX_FILTERS

Default number of filters to store in the cache

See Also:

Constant Field Values

Constructor Detail

MetadataPerformanceTuning

public MetadataPerformanceTuning()

Create a default performance tuning object with default values.

MetadataPerformanceTuning

public MetadataPerformanceTuning(int bufferSize,
                                 int lookAhead,
                                 int maxFilters)

Create a performance tuning object with specified buffersize, lookAhead and maxFilters. If -1 is passed in for any of the arguments the default value will be used

Parameters:

bufferSize - maximum number of elements to store in the cache

lookAhead - number of elements to read ahead when making a server call

maxFilter - number of filters to store in the cache

Method Detail

useCache

public boolean useCache()

Check to see if the cache is being used or not.

Returns:

true if cache is being used to store and retrieve elements from the server, false otherwise

useCache

public void useCache(boolean useCache)

Set the flag to use the cache or not.

Parameters:

useCache - true if the cache should be used false otherwise. The default value is to use the cache.

setCacheParms

public void setCacheParms(int bufferSize,
                          int lookAhead,
                          int maxFilters)

Set the cache properties

Parameters:

bufferSize - cache size or -1 to use default value

lookAhead - number of elements to read ahead and store in the cache or -1 to use default value

maxFilters - number of member filters to store in the cache or -1 to use default value

bufferSize

public int bufferSize()

Get the buffersize set on the performance tuning object

Returns:

size of the cache

lookAhead

public int lookAhead()

Get the read ahead value.

Returns:

read ahead value

maxFilters

public int maxFilters()

Get the number of member filters to store in the cache

Returns:

number of member filters