Package org.openremote.model.datapoint.query

Class AssetDatapointNearestQuery

java.lang.Object

org.openremote.model.datapoint.query.AssetDatapointQuery

org.openremote.model.datapoint.query.AssetDatapointNearestQuery

All Implemented Interfaces:

Serializable

public class AssetDatapointNearestQuery
extends AssetDatapointQuery

This `AssetDatapointQuery` retrieves the value of a datapoint associated with a specific `AttributeRef` at a specified timestamp. It is designed to find the closest datapoint that precedes the requested timestamp.

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.openremote.model.datapoint.query.AssetDatapointQuery

fromTime, fromTimestamp, toTime, toTimestamp

Constructor Summary

Constructors

Constructor	Description
AssetDatapointNearestQuery()
AssetDatapointNearestQuery(long timestamp)

Method Summary

Modifier and Type	Method	Description
HashMap<Integer,Object>	getSQLParameters(AttributeRef attributeRef)
String	getSQLQuery(String tableName, Class<?> attributeType)

Methods inherited from class java.lang.Object

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

Constructor Details

AssetDatapointNearestQuery

public AssetDatapointNearestQuery()

AssetDatapointNearestQuery

public AssetDatapointNearestQuery(long timestamp)

Method Details

getSQLQuery

public String getSQLQuery(String tableName,
 Class<?> attributeType)
                   throws IllegalStateException

Overrides:

getSQLQuery in class AssetDatapointQuery

Throws:

IllegalStateException

getSQLParameters

public HashMap<Integer,Object> getSQLParameters(AttributeRef attributeRef)

Overrides:

getSQLParameters in class AssetDatapointQuery