com.sleepycat.db
Class VerifyConfig

java.lang.Object
  com.sleepycat.db.VerifyConfig

public class VerifyConfig
extends Object

Specifies the attributes of a verification operation.

Field Summary

static VerifyConfig

DEFAULT Default configuration used if null is passed to Database.verify.

Constructor Summary

VerifyConfig()
An instance created using the default constructor is initialized with the system's default settings.

Method Summary

boolean	getAggressive() Return true if the Database.verify is configured to output all the key/data pairs in the file that can be found.
boolean	getNoOrderCheck() Return true if the Database.verify is configured to skip the database checks for btree and duplicate sort order and for hashing.
boolean	getOrderCheckOnly() Return true if the Database.verify is configured to do database checks for btree and duplicate sort order and for hashing, skipped by verification operations configured by VerifyConfig.setNoOrderCheck.
boolean	getPrintable() Return true if the Database.verify is configured to use printing characters to where possible.
boolean	getSalvage() Return true if the Database.verify is configured to write the key/data pairs from all databases in the file to the file stream named by the outfile parameter..
void	setAggressive(boolean aggressive) Configure Database.verify to output all the key/data pairs in the file that can be found.
void	setNoOrderCheck(boolean noOrderCheck) Configure Database.verify to skip the database checks for btree and duplicate sort order and for hashing.
void	setOrderCheckOnly(boolean orderCheckOnly) Configure Database.verify to do database checks for btree and duplicate sort order and for hashing, skipped by verification operations configured by VerifyConfig.setNoOrderCheck.
void	setPrintable(boolean printable) Configure Database.verify to use printing characters to where possible.
void	setSalvage(boolean salvage) Configure Database.verify to write the key/data pairs from all databases in the file to the file stream named by the outfile parameter.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT

public static final VerifyConfig DEFAULT

Default configuration used if null is passed to Database.verify.

Constructor Detail

VerifyConfig

public VerifyConfig()

An instance created using the default constructor is initialized with the system's default settings.

Method Detail

setNoOrderCheck

public void setNoOrderCheck(boolean noOrderCheck)

Configure Database.verify to skip the database checks for btree and duplicate sort order and for hashing.

Database.verify normally verifies that btree keys and duplicate items are correctly sorted, and hash keys are correctly hashed. If the file being verified contains multiple databases using differing sorting or hashing algorithms, some of them must necessarily fail database verification because only one sort order or hash function can be specified before Database.verify is called. To verify files with multiple databases having differing sorting orders or hashing functions, first perform verification of the file as a whole using Database.verify configured with VerifyConfig.setNoOrderCheck, and then individually verify the sort order and hashing function for each database in the file using 4_link(Database, verify) configured with VerifyConfig.setOrderCheckOnly.

Parameters:

noOrderCheck - If true, configure Database.verify to skip the database checks for btree and duplicate sort order and for hashing.

getNoOrderCheck

public boolean getNoOrderCheck()

Return true if the Database.verify is configured to skip the database checks for btree and duplicate sort order and for hashing.

This method may be called at any time during the life of the application.

Returns:

True if the Database.verify is configured to skip the database checks for btree and duplicate sort order and for hashing.

setOrderCheckOnly

public void setOrderCheckOnly(boolean orderCheckOnly)

Configure Database.verify to do database checks for btree and duplicate sort order and for hashing, skipped by verification operations configured by VerifyConfig.setNoOrderCheck.

When this flag is specified, a database name must be specified to Database.verify, indicating the database in the physical file which is to be checked.

This configuration is only safe to use on databases that have already successfully been verified with VerifyConfig.setNoOrderCheck configured.

Parameters:

orderCheckOnly - If true, configure Database.verify to do database checks for btree and duplicate sort order and for hashing, skipped by verification operations configured by VerifyConfig.setNoOrderCheck.

getOrderCheckOnly

public boolean getOrderCheckOnly()

Return true if the Database.verify is configured to do database checks for btree and duplicate sort order and for hashing, skipped by verification operations configured by VerifyConfig.setNoOrderCheck.

This method may be called at any time during the life of the application.

Returns:

True if the Database.verify is configured to do database checks for btree and duplicate sort order and for hashing, skipped by verification operations configured by VerifyConfig.setNoOrderCheck.

setPrintable

public void setPrintable(boolean printable)

Configure Database.verify to use printing characters to where possible.

This method is only meaningful when combined with VerifyConfig.setSalvage.

This configuration permits users to use standard text editors and tools to modify the contents of databases or selectively remove data from salvager output.

Note: different systems may have different notions about what characters are considered printing characters, and databases dumped in this manner may be less portable to external systems.

Parameters:

printable - If true, configure Database.verify to use printing characters to where possible.

getPrintable

public boolean getPrintable()

Return true if the Database.verify is configured to use printing characters to where possible.

This method may be called at any time during the life of the application.

Returns:

True if the Database.verify is configured to use printing characters to where possible.

setSalvage

public void setSalvage(boolean salvage)

Configure Database.verify to write the key/data pairs from all databases in the file to the file stream named by the outfile parameter.

The output format is the same as that specified for the db_dump utility, and can be used as input for the db_load utility.

Because the key/data pairs are output in page order as opposed to the sort order used by db_dump, using Database.verify to dump key/data pairs normally produces less than optimal loads for Btree databases.

Parameters:

salvage - If true, configure Database.verify to write the key/data pairs from all databases in the file to the file stream named by the outfile parameter.

getSalvage

public boolean getSalvage()

Return true if the Database.verify is configured to write the key/data pairs from all databases in the file to the file stream named by the outfile parameter..

This method may be called at any time during the life of the application.

Returns:

True if the Database.verify is configured to write the key/data pairs from all databases in the file to the file stream named by the outfile parameter..

setAggressive

public void setAggressive(boolean aggressive)

Configure Database.verify to output all the key/data pairs in the file that can be found.

By default, Database.verify does not assume corruption. For example, if a key/data pair on a page is marked as deleted, it is not then written to the output file. When Database.verify is configured with this method, corruption is assumed, and any key/data pair that can be found is written. In this case, key/data pairs that are corrupted or have been deleted may appear in the output (even if the file being salvaged is in no way corrupt), and the output will almost certainly require editing before being loaded into a database.

Parameters:

aggressive - If true, configure Database.verify to output all the key/data pairs in the file that can be found.

getAggressive

public boolean getAggressive()

Return true if the Database.verify is configured to output all the key/data pairs in the file that can be found.

This method may be called at any time during the life of the application.

Returns:

True if the Database.verify is configured to output all the key/data pairs in the file that can be found.