org.hibernate.spatial.dialect.postgis
Class PostgisDialect

java.lang.Object
  org.hibernate.dialect.Dialect
      org.hibernate.dialect.PostgreSQL81Dialect
          org.hibernate.dialect.PostgreSQL82Dialect
              org.hibernate.dialect.PostgreSQLDialect
                  org.hibernate.spatial.dialect.postgis.PostgisDialect

All Implemented Interfaces:

java.io.Serializable, org.hibernate.exception.spi.ConversionContext, SpatialDialect

Direct Known Subclasses:

PostgisNoSQLMM

public class PostgisDialect
extends org.hibernate.dialect.PostgreSQLDialect
implements SpatialDialect

Extends the PostgreSQLDialect by also including information on spatial operators, constructors and processing functions.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.hibernate.dialect.Dialect

CLOSED_QUOTE, DEFAULT_BATCH_SIZE, NO_BATCH, QUOTE

Constructor Summary

PostgisDialect()

Method Summary

java.lang.String	getDWithinSQL(java.lang.String columnName) Returns the SQL fragment when parsing a DWithinExpression.
java.lang.String	getHavingSridSQL(java.lang.String columnName) Returns the SQL fragment when parsing an HavingSridExpression.
java.lang.String	getIsEmptySQL(java.lang.String columnName, boolean isEmpty) Returns the SQL fragment when parsing a IsEmptyExpression or IsNotEmpty expression.
java.lang.String	getSpatialAggregateSQL(java.lang.String columnName, int aggregation)
java.lang.String	getSpatialFilterExpression(java.lang.String columnName) Returns the SQL fragment for the SQL WHERE-expression when parsing org.hibernate.spatial.criterion.SpatialFilterExpressions into prepared statements.
java.lang.String	getSpatialRelateSQL(java.lang.String columnName, int spatialRelation) Returns the SQL fragment for the SQL WHERE-clause when parsing org.hibernatespatial.criterion.SpatialRelateExpressions into prepared statements.
java.lang.String	getTypeName(int code, long length, int precision, int scale) Get the name of the database type associated with the given Types typecode with the given storage specification parameters.
org.hibernate.type.descriptor.sql.SqlTypeDescriptor	remapSqlTypeDescriptor(org.hibernate.type.descriptor.sql.SqlTypeDescriptor sqlTypeDescriptor) Allows the dialect to override a SqlTypeDescriptor.
boolean	supports(SpatialFunction function) Does this dialect supports the specified SpatialFunction.
boolean	supportsFiltering() Returns true if this SpatialDialect supports a specific filtering function.

Methods inherited from class org.hibernate.dialect.PostgreSQL82Dialect

supportsIfExistsBeforeTableName

Methods inherited from class org.hibernate.dialect.PostgreSQL81Dialect

bindLimitParametersInReverseOrder, buildSQLExceptionConversionDelegate, dropConstraints, getAddColumnString, getCascadeConstraintsString, getCaseInsensitiveLike, getCreateSequenceString, getCreateTemporaryTablePostfix, getCreateTemporaryTableString, getCurrentTimestampSelectString, getDropSequenceString, getForUpdateNowaitString, getForUpdateNowaitString, getForUpdateString, getForUpdateString, getIdentityColumnString, getIdentitySelectString, getLimitString, getNativeIdentifierGeneratorClass, getNoColumnsInsertString, getQuerySequencesString, getReadLockString, getResultSet, getSelectClauseNullString, getSelectSequenceNextValString, getSequenceNextValString, getSqlTypeDescriptorOverride, getViolatedConstraintNameExtracter, getWriteLockString, hasDataTypeInIdentityColumn, isCurrentTimestampSelectStringCallable, registerResultSetOutParameter, supportsCaseInsensitiveLike, supportsCommentOn, supportsCurrentTimestampSelection, supportsEmptyInList, supportsExpectedLobUsagePattern, supportsIdentityColumns, supportsLimit, supportsLobValueChangePropogation, supportsOuterJoinForUpdate, supportsPooledSequences, supportsRowValueConstructorSyntax, supportsSequences, supportsTemporaryTables, supportsTupleDistinctCounts, supportsUnboundedLobLocatorMaterialization, supportsUnionAll, toBooleanValueString, useInputStreamToInsertBlob

Methods inherited from class org.hibernate.dialect.Dialect

appendIdentitySelectToInsert, appendLockHint, appendLockHint, applyLocksToSql, areStringComparisonsCaseInsensitive, bindLimitParametersFirst, buildLimitHandler, buildSQLExceptionConverter, cast, cast, cast, closeQuote, convertToFirstRowValue, createCaseFragment, createOuterJoinFragment, doesReadCommittedCauseWritersToBlockReaders, doesRepeatableReadCauseReadersToBlockWriters, dropTemporaryTableAfterUse, forceLimitUsage, forceLobAsLastValue, forUpdateOfColumns, generateTemporaryTableName, getAddForeignKeyConstraintString, getAddPrimaryKeyConstraintString, getAddUniqueConstraintString, getCastTypeName, getColumnAliasExtractor, getColumnComment, getCreateMultisetTableString, getCreateSequenceStrings, getCreateSequenceStrings, getCreateTableString, getCrossJoinSeparator, getCurrentTimestampSQLFunctionName, getDefaultProperties, getDialect, getDialect, getDropForeignKeyString, getDropSequenceStrings, getDropTableString, getDropTemporaryTableString, getForUpdateString, getForUpdateString, getForUpdateString, getFunctions, getHibernateTypeName, getHibernateTypeName, getIdentityInsertString, getInExpressionCountLimit, getKeywords, getLimitString, getLobMergeStrategy, getLockingStrategy, getLowercaseFunction, getMaxAliasLength, getNotExpression, getNullColumnString, getSelectGUIDString, getTableComment, getTableTypeString, getTypeName, hasAlterTable, hasSelfReferentialForeignKeyBug, isLockTimeoutParameterized, openQuote, performTemporaryTableDDLInIsolation, qualifyIndexName, quote, replaceResultVariableInOrderByClauseWithPosition, requiresCastingOfParametersInSelectClause, supportsBindAsCallableArgument, supportsCascadeDelete, supportsCircularCascadeDeleteConstraints, supportsColumnCheck, supportsExistsInSelect, supportsIfExistsAfterTableName, supportsInsertSelectIdentity, supportsLimitOffset, supportsLockTimeouts, supportsNotNullUnique, supportsParametersInInsertSelect, supportsResultSetPositionQueryMethodsOnForwardOnlyCursor, supportsRowValueConstructorSyntaxInInList, supportsSubqueryOnMutatingTable, supportsSubselectAsInPredicateLHS, supportsTableCheck, supportsTupleCounts, supportsUnique, supportsUniqueConstraintInCreateAlterTable, supportsVariableLimit, toString, transformSelectString, useFollowOnLocking, useMaxForLimit

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PostgisDialect

public PostgisDialect()

Method Detail

getTypeName

public java.lang.String getTypeName(int code,
                                    long length,
                                    int precision,
                                    int scale)
                             throws org.hibernate.HibernateException

Get the name of the database type associated with the given Types typecode with the given storage specification parameters. In the case of typecode == 3000, it returns this dialect's spatial type which is GEOMETRY.

Overrides:

getTypeName in class org.hibernate.dialect.Dialect

Parameters:

code - The Types typecode

length - The datatype length

precision - The datatype precision

scale - The datatype scale

Returns:

Throws:

org.hibernate.HibernateException

remapSqlTypeDescriptor

public org.hibernate.type.descriptor.sql.SqlTypeDescriptor remapSqlTypeDescriptor(org.hibernate.type.descriptor.sql.SqlTypeDescriptor sqlTypeDescriptor)

Description copied from class: org.hibernate.dialect.Dialect

Allows the dialect to override a SqlTypeDescriptor.

If the passed sqlTypeDescriptor allows itself to be remapped (per SqlTypeDescriptor.canBeRemapped()), then this method uses Dialect.getSqlTypeDescriptorOverride(int) to get an optional override based on the SQL code returned by SqlTypeDescriptor.getSqlType().

If this dialect does not provide an override or if the sqlTypeDescriptor doe not allow itself to be remapped, then this method simply returns the original passed sqlTypeDescriptor

Overrides:

remapSqlTypeDescriptor in class org.hibernate.dialect.Dialect

Parameters:

sqlTypeDescriptor - The SqlTypeDescriptor to override

Returns:

The SqlTypeDescriptor that should be used for this dialect; if there is no override, then original sqlTypeDescriptor is returned.

See Also:

Dialect.getSqlTypeDescriptorOverride(int)

getSpatialRelateSQL

public java.lang.String getSpatialRelateSQL(java.lang.String columnName,
                                            int spatialRelation)

Description copied from interface: SpatialDialect

Returns the SQL fragment for the SQL WHERE-clause when parsing org.hibernatespatial.criterion.SpatialRelateExpressions into prepared statements.

Specified by:

getSpatialRelateSQL in interface SpatialDialect

Parameters:

columnName - The name of the geometry-typed column to which the relation is applied

spatialRelation - The type of spatial relation (as defined in SpatialRelation).

Returns:

SQL fragment for use in the SQL WHERE-clause.

getDWithinSQL

public java.lang.String getDWithinSQL(java.lang.String columnName)

Description copied from interface: SpatialDialect

Returns the SQL fragment when parsing a DWithinExpression.

Specified by:

getDWithinSQL in interface SpatialDialect

Parameters:

columnName - the geometry column to test against

Returns:

getHavingSridSQL

public java.lang.String getHavingSridSQL(java.lang.String columnName)

Description copied from interface: SpatialDialect

Returns the SQL fragment when parsing an HavingSridExpression.

Specified by:

getHavingSridSQL in interface SpatialDialect

Parameters:

columnName - the geometry column to test against

Returns:

getIsEmptySQL

public java.lang.String getIsEmptySQL(java.lang.String columnName,
                                      boolean isEmpty)

Description copied from interface: SpatialDialect

Returns the SQL fragment when parsing a IsEmptyExpression or IsNotEmpty expression.

Specified by:

getIsEmptySQL in interface SpatialDialect

Parameters:

columnName - the geometry column

isEmpty - whether the geometry is tested for empty or non-empty

Returns:

getSpatialFilterExpression

public java.lang.String getSpatialFilterExpression(java.lang.String columnName)

Description copied from interface: SpatialDialect

Returns the SQL fragment for the SQL WHERE-expression when parsing org.hibernate.spatial.criterion.SpatialFilterExpressions into prepared statements.

Specified by:

getSpatialFilterExpression in interface SpatialDialect

Returns:

getSpatialAggregateSQL

public java.lang.String getSpatialAggregateSQL(java.lang.String columnName,
                                               int aggregation)

Specified by:

getSpatialAggregateSQL in interface SpatialDialect

Parameters:

columnName - the name of the Geometry property

aggregation - the type of SpatialAggregate

Returns:

the SQL fragment for the projection

supportsFiltering

public boolean supportsFiltering()

Description copied from interface: SpatialDialect

Returns true if this SpatialDialect supports a specific filtering function.

This is intended to signal DB-support for fast window queries, or MBR-overlap queries

Specified by:

supportsFiltering in interface SpatialDialect

supports

public boolean supports(SpatialFunction function)

Description copied from interface: SpatialDialect

Does this dialect supports the specified SpatialFunction.

Specified by:

supports in interface SpatialDialect

Parameters:

function - SpatialFunction

Returns:

true if this SpatialDialect supports the spatial function specified by the function parameter.