Package com.evolveum.midpoint.repo.sql.pure

Class SqlTransformer<S,Q extends FlexibleRelationalPathBase<R>,R>

java.lang.Object

com.evolveum.midpoint.repo.sql.pure.SqlTransformer<S,Q,R>

Type Parameters:

S - schema type

R - type of the transformed data, a row bean

Direct Known Subclasses:

AuditDeltaSqlTransformer, AuditEventRecordSqlTransformer

public abstract class SqlTransformer<S,Q extends FlexibleRelationalPathBase<R>,R>
extends Object

Base class for SQL transformers translating from query beans or tuples to model types.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SqlTransformer.SqlTransformationException

Field Summary

Fields

Modifier and Type	Field	Description
protected QueryModelMapping<S,Q,R>	mapping
protected PrismContext	prismContext
protected com.querydsl.sql.Configuration	querydslConfiguration

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SqlTransformer(PrismContext prismContext, QueryModelMapping<S,Q,R> mapping, com.querydsl.sql.Configuration querydslConfiguration)

Method Summary

Modifier and Type	Method	Description
protected @Nullable ObjectReferenceType	objectReferenceType(@Nullable String oid, RObjectType repoObjectType, String description)	Returns ObjectReferenceType with specified oid, proper type based on RObjectType and, optionally, description.
protected void	processExtensionColumns(S schemaObject, com.querydsl.core.Tuple tuple, Q entityPath)
protected @Nullable RObjectType	repoObjectType(@Nullable Integer repoObjectTypeId)	Returns nullable RObjectType from ordinal Integer.
protected @NotNull RObjectType	repoObjectType(@Nullable Integer repoObjectTypeId, @NotNull RObjectType defaultValue)	Returns RObjectType from ordinal Integer or specified default value.
S	toSchemaObject(com.querydsl.core.Tuple tuple, Q entityPath)	Transforms row Tuple containing SqlTransformer under entity path and extension columns.
abstract S	toSchemaObject(R row)	Transforms row of R to M type - typically a model/schema object.
S	toSchemaObjectSafe(com.querydsl.core.Tuple row, Q entityPath)
S	toSchemaObjectSafe(R row)	Version of toSchemaObject(Object) rethrowing checked exceptions as unchecked SqlTransformer.SqlTransformationException - this is useful for lambda/method references usages.
protected @Nullable String	trim(@Nullable String value, @NotNull com.querydsl.sql.ColumnMetadata columnMetadata)	Trimming the value to the column size from column metadata (must be specified).

Methods inherited from class java.lang.Object

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

Field Detail

prismContext

protected final PrismContext prismContext

mapping

protected final QueryModelMapping<S,Q extends FlexibleRelationalPathBase<R>,R> mapping

querydslConfiguration

protected final com.querydsl.sql.Configuration querydslConfiguration

Constructor Detail

SqlTransformer

protected SqlTransformer(PrismContext prismContext,
                         QueryModelMapping<S,Q,R> mapping,
                         com.querydsl.sql.Configuration querydslConfiguration)

Method Detail

toSchemaObject

public abstract S toSchemaObject(R row)
                          throws SchemaException

Transforms row of R to M type - typically a model/schema object. If pre-generated bean is used as row it does not include extension (dynamic) columns, which is OK if extension columns are used only for query and their information is still contained in the object somehow else (e.g. full object LOB).

Alternative would be dynamically generated list of select expressions and transforming row to M object directly from Tuple.

Throws:

SchemaException

toSchemaObject

public S toSchemaObject(com.querydsl.core.Tuple tuple,
                        Q entityPath)
                 throws SchemaException

Transforms row Tuple containing SqlTransformer under entity path and extension columns.

Throws:

SchemaException

processExtensionColumns

protected void processExtensionColumns(S schemaObject,
                                       com.querydsl.core.Tuple tuple,
                                       Q entityPath)

toSchemaObjectSafe

public S toSchemaObjectSafe(R row)

Version of toSchemaObject(Object) rethrowing checked exceptions as unchecked SqlTransformer.SqlTransformationException - this is useful for lambda/method references usages.

toSchemaObjectSafe

public S toSchemaObjectSafe(com.querydsl.core.Tuple row,
                            Q entityPath)

objectReferenceType

@Nullable
protected @Nullable ObjectReferenceType objectReferenceType(@Nullable
                                                            @Nullable String oid,
                                                            RObjectType repoObjectType,
                                                            String description)

Returns ObjectReferenceType with specified oid, proper type based on RObjectType and, optionally, description. Returns null if OID is null. Fails if OID is not null and repoObjectType is null.

repoObjectType

@NotNull
protected @NotNull RObjectType repoObjectType(@Nullable
                                              @Nullable Integer repoObjectTypeId,
                                              @NotNull
                                              @NotNull RObjectType defaultValue)

Returns RObjectType from ordinal Integer or specified default value.

repoObjectType

@Nullable
protected @Nullable RObjectType repoObjectType(@Nullable
                                               @Nullable Integer repoObjectTypeId)

Returns nullable RObjectType from ordinal Integer. If null is returned it will not fail immediately unlike RObjectType.fromOrdinal(int). This is practical for eager argument resolution for objectReferenceType(String, RObjectType, String). Null may still be OK if OID is null as well - which means no reference.

trim

@Nullable
protected @Nullable String trim(@Nullable
                                @Nullable String value,
                                @NotNull
                                @NotNull com.querydsl.sql.ColumnMetadata columnMetadata)

Trimming the value to the column size from column metadata (must be specified).