Class VersionTable
- java.lang.Object
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- com.google.android.exoplayer2.database.VersionTable
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public final class VersionTable extends Object
Utility methods for accessing versions of media library database components. This allows them to be versioned independently to the version of the containing database.
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Field Summary
Fields Modifier and Type Field Description static int
FEATURE_CACHE_CONTENT_METADATA
Version of tables used for cache content metadata.static int
FEATURE_CACHE_FILE_METADATA
Version of tables used for cache file metadata.static int
FEATURE_EXTERNAL
Version of tables used from external features.static int
FEATURE_OFFLINE
Version of tables used for offline functionality.static int
VERSION_UNSET
Returned bygetVersion(SQLiteDatabase, int, String)
if the version is unset.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static int
getVersion(SQLiteDatabase database, @com.google.android.exoplayer2.database.VersionTable.Feature int feature, String instanceUid)
Returns the version of a specified instance of a feature, orVERSION_UNSET
if no version is set.static void
removeVersion(SQLiteDatabase writableDatabase, @com.google.android.exoplayer2.database.VersionTable.Feature int feature, String instanceUid)
Removes the version of a specified instance of a feature.static void
setVersion(SQLiteDatabase writableDatabase, @com.google.android.exoplayer2.database.VersionTable.Feature int feature, String instanceUid, int version)
Sets the version of a specified instance of a specified feature.
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Field Detail
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VERSION_UNSET
public static final int VERSION_UNSET
Returned bygetVersion(SQLiteDatabase, int, String)
if the version is unset.- See Also:
- Constant Field Values
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FEATURE_OFFLINE
public static final int FEATURE_OFFLINE
Version of tables used for offline functionality.- See Also:
- Constant Field Values
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FEATURE_CACHE_CONTENT_METADATA
public static final int FEATURE_CACHE_CONTENT_METADATA
Version of tables used for cache content metadata.- See Also:
- Constant Field Values
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FEATURE_CACHE_FILE_METADATA
public static final int FEATURE_CACHE_FILE_METADATA
Version of tables used for cache file metadata.- See Also:
- Constant Field Values
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FEATURE_EXTERNAL
public static final int FEATURE_EXTERNAL
Version of tables used from external features.- See Also:
- Constant Field Values
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Method Detail
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setVersion
public static void setVersion(SQLiteDatabase writableDatabase, @com.google.android.exoplayer2.database.VersionTable.Feature int feature, String instanceUid, int version) throws DatabaseIOException
Sets the version of a specified instance of a specified feature.- Parameters:
writableDatabase
- The database to update.feature
- The feature.instanceUid
- The unique identifier of the instance of the feature.version
- The version.- Throws:
DatabaseIOException
- If an error occurs executing the SQL.
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removeVersion
public static void removeVersion(SQLiteDatabase writableDatabase, @com.google.android.exoplayer2.database.VersionTable.Feature int feature, String instanceUid) throws DatabaseIOException
Removes the version of a specified instance of a feature.- Parameters:
writableDatabase
- The database to update.feature
- The feature.instanceUid
- The unique identifier of the instance of the feature.- Throws:
DatabaseIOException
- If an error occurs executing the SQL.
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getVersion
public static int getVersion(SQLiteDatabase database, @com.google.android.exoplayer2.database.VersionTable.Feature int feature, String instanceUid) throws DatabaseIOException
Returns the version of a specified instance of a feature, orVERSION_UNSET
if no version is set.- Parameters:
database
- The database to query.feature
- The feature.instanceUid
- The unique identifier of the instance of the feature.- Returns:
- The version, or
VERSION_UNSET
if no version is set. - Throws:
DatabaseIOException
- If an error occurs executing the SQL.
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