liquibase.ext.spatial.sqlgenerator

Class AbstractSpatialUpdateGenerator

java.lang.Object

UpdateGenerator

liquibase.ext.spatial.sqlgenerator.AbstractSpatialUpdateGenerator

All Implemented Interfaces:

WktInsertOrUpdateGenerator

Direct Known Subclasses:

SpatialUpdateGeneratorGeoDB, SpatialUpdateGeneratorMySQL, SpatialUpdateGeneratorOracle

public abstract class AbstractSpatialUpdateGenerator
extends UpdateGenerator
implements WktInsertOrUpdateGenerator

Implementations of AbstractSpatialInsertGenerator convert a Well-Known Text string and EPSG SRID string to the database-specific geometry.

Author:

Lonny

Constructor Summary

Constructors

Constructor and Description
AbstractSpatialUpdateGenerator()

Method Summary

Methods

Modifier and Type	Method and Description
String	convertToFunction(String wkt, String srid, Database database) Converts the given Well-Known Text and SRID to the appropriate function call for the database.
Sql[]	generateSql(UpdateStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) Find any fields that look like WKT or EWKT and replace them with the database-specific value.
int	getPriority()
protected Object	handleColumnValue(Object oldValue, Database database) If the old value is a geometry or a Well-Known Text, convert it to the appropriate new value.
boolean	isSridRequiredInFunction(Database database) Indicates if the SRID parameter is required in the function returned from WktInsertOrUpdateGenerator.getGeomFromWktFunction().
boolean	looksLikeFunctionCall(String value, Database database)
ValidationErrors	validate(UpdateStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain)

Methods inherited from class java.lang.Object

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

Methods inherited from interface liquibase.ext.spatial.sqlgenerator.WktInsertOrUpdateGenerator

getGeomFromWktFunction

Constructor Detail

AbstractSpatialUpdateGenerator

public AbstractSpatialUpdateGenerator()

Method Detail

getPriority

public int getPriority()

validate

public ValidationErrors validate(UpdateStatement statement,
                        Database database,
                        SqlGeneratorChain sqlGeneratorChain)

generateSql

public Sql[] generateSql(UpdateStatement statement,
                Database database,
                SqlGeneratorChain sqlGeneratorChain)

Find any fields that look like WKT or EWKT and replace them with the database-specific value.

looksLikeFunctionCall

public boolean looksLikeFunctionCall(String value,
                            Database database)

See Also:

liquibase.sqlgenerator.core.AbstractSqlGenerator#looksLikeFunctionCall(java.lang.String, liquibase.database.Database)

isSridRequiredInFunction

public boolean isSridRequiredInFunction(Database database)

Indicates if the SRID parameter is required in the function returned from WktInsertOrUpdateGenerator.getGeomFromWktFunction().

Specified by:

isSridRequiredInFunction in interface WktInsertOrUpdateGenerator

Parameters:

database - the database instance.

Returns:

true if the SRID parameter is required in order to invoke the function.

handleColumnValue

protected Object handleColumnValue(Object oldValue,
                       Database database)

If the old value is a geometry or a Well-Known Text, convert it to the appropriate new value. Otherwise, this method returns the old value.

Parameters:

oldValue - the old value.

database - the database instance.

Returns:

the new value.

convertToFunction

public String convertToFunction(String wkt,
                       String srid,
                       Database database)

Description copied from interface: WktInsertOrUpdateGenerator

Converts the given Well-Known Text and SRID to the appropriate function call for the database.

Specified by:

convertToFunction in interface WktInsertOrUpdateGenerator

Parameters:

wkt - the Well-Known Text string.

srid - the SRID string which may be an empty string.

database - the database instance.

Returns:

the string that converts the WKT to a database-specific geometry.