Package com.inductiveautomation.gateway.tags.history.storage

Class TagHistoryTables

java.lang.Object

com.inductiveautomation.gateway.tags.history.storage.TagHistoryTables

public class TagHistoryTables
extends java.lang.Object

Provides static definitions of the sqltags history tables, along with a few query helper functions.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TagHistoryTables.Annotations
static class	TagHistoryTables.Drivers
static class	TagHistoryTables.PartitionIndex
static class	TagHistoryTables.ScanclassExecutions	The SCE (scan class execution) table is an important table which tracks when scan classes run.
static class	TagHistoryTables.ScanclassInfo	Provides information about the scan class.
static class	TagHistoryTables.TagRecord
static class	TagHistoryTables.TagValues

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	EXEMPT_SC_NAME	The "exempt" sc is used whenever a tag belongs to a non-standard scan class.
static java.lang.String	EXISTING_SC_NAME	This special scan class key is used to indicate that we should use whatever the latest value was.

Constructor Summary

Constructors

Constructor	Description
TagHistoryTables()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

EXEMPT_SC_NAME

public static final java.lang.String EXEMPT_SC_NAME

The "exempt" sc is used whenever a tag belongs to a non-standard scan class. In these cases, we can't use scan class execution validation, so we just group those types of tags together under this fake sc name.

See Also:

Constant Field Values

EXISTING_SC_NAME

public static final java.lang.String EXISTING_SC_NAME

This special scan class key is used to indicate that we should use whatever the latest value was. If not present, EXEMPT will be used.

See Also:

Constant Field Values

Constructor Detail

TagHistoryTables

public TagHistoryTables()