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Partial implementation.
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Non trivial aggregates work with single value wrapped PK.
Simple aggregates work with composite id for insert, update, delete and exists.

See #574
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@schauder
schauder committed Oct 29, 2024
1 parent aa8661e commit 66da06c
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24 changes: 23 additions & 1 deletion ...-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/JdbcIdentifierBuilder.java
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Expand Up @@ -15,7 +15,13 @@
*/
package org.springframework.data.jdbc.core.convert;

import org.springframework.beans.factory.config.ConstructorArgumentValues;
import org.springframework.data.mapping.PersistentPropertyAccessor;
import org.springframework.data.mapping.SimplePropertyHandler;
import org.springframework.data.relational.core.mapping.AggregatePath;
import org.springframework.data.relational.core.mapping.RelationalPersistentEntity;
import org.springframework.data.relational.core.mapping.RelationalPersistentProperty;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
Expand All @@ -41,10 +47,26 @@ public static JdbcIdentifierBuilder empty() {
*/
public static JdbcIdentifierBuilder forBackReferences(JdbcConverter converter, AggregatePath path, Object value) {

RelationalPersistentProperty idProperty = path.getIdDefiningParentPath().getRequiredIdProperty();

if (value != null && idProperty.isEntity() && idProperty.isEmbedded()) {
// TODO: Fix for more than one property
RelationalPersistentEntity<?> propertyType = converter.getMappingContext().getRequiredPersistentEntity(idProperty.getType());
PersistentPropertyAccessor<Object> propertyAccessor = propertyType.getPropertyAccessor(value);
Object[] bucket = new Object[1];
propertyType.doWithProperties((SimplePropertyHandler) p -> {
if (bucket[0] != null) {
throw new IllegalStateException("Can't handle embededs with more than one property");
}
bucket[0] = propertyAccessor.getProperty(p);
});
value = bucket[0];
}

Identifier identifier = Identifier.of( //
path.getTableInfo().reverseColumnInfo().name(), //
value, //
converter.getColumnType(path.getIdDefiningParentPath().getRequiredIdProperty()) //
converter.getColumnType(idProperty) //
);

return new JdbcIdentifierBuilder(identifier);
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34 changes: 21 additions & 13 deletions ...a-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/MappingJdbcConverter.java
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
import java.sql.SQLException;
import java.sql.SQLType;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.function.Function;
Expand Down Expand Up @@ -80,7 +81,7 @@ public class MappingJdbcConverter extends MappingRelationalConverter implements
* {@link #MappingJdbcConverter(RelationalMappingContext, RelationResolver, CustomConversions, JdbcTypeFactory)}
* (MappingContext, RelationResolver, JdbcTypeFactory)} to convert arrays and large objects into JDBC-specific types.
*
* @param context must not be {@literal null}.
* @param context must not be {@literal null}.
* @param relationResolver used to fetch additional relations from the database. Must not be {@literal null}.
*/
public MappingJdbcConverter(RelationalMappingContext context, RelationResolver relationResolver) {
Expand All @@ -98,12 +99,12 @@ public MappingJdbcConverter(RelationalMappingContext context, RelationResolver r
/**
* Creates a new {@link MappingJdbcConverter} given {@link MappingContext}.
*
* @param context must not be {@literal null}.
* @param context must not be {@literal null}.
* @param relationResolver used to fetch additional relations from the database. Must not be {@literal null}.
* @param typeFactory must not be {@literal null}
* @param typeFactory must not be {@literal null}
*/
public MappingJdbcConverter(RelationalMappingContext context, RelationResolver relationResolver,
CustomConversions conversions, JdbcTypeFactory typeFactory) {
CustomConversions conversions, JdbcTypeFactory typeFactory) {

super(context, conversions);

Expand Down Expand Up @@ -285,7 +286,7 @@ public <R> R readAndResolve(TypeInformation<R> type, RowDocument source, Identif

@Override
protected RelationalPropertyValueProvider newValueProvider(RowDocumentAccessor documentAccessor,
ValueExpressionEvaluator evaluator, ConversionContext context) {
ValueExpressionEvaluator evaluator, ConversionContext context) {

if (context instanceof ResolvingConversionContext rcc) {

Expand Down Expand Up @@ -314,7 +315,7 @@ class ResolvingRelationalPropertyValueProvider implements RelationalPropertyValu
private final Identifier identifier;

private ResolvingRelationalPropertyValueProvider(AggregatePathValueProvider delegate, RowDocumentAccessor accessor,
ResolvingConversionContext context, Identifier identifier) {
ResolvingConversionContext context, Identifier identifier) {

AggregatePath path = context.aggregatePath();

Expand All @@ -323,15 +324,15 @@ private ResolvingRelationalPropertyValueProvider(AggregatePathValueProvider dele
this.context = context;
this.identifier = path.isEntity()
? potentiallyAppendIdentifier(identifier, path.getRequiredLeafEntity(),
property -> delegate.getValue(path.append(property)))
property -> delegate.getValue(path.append(property)))
: identifier;
}

/**
* Conditionally append the identifier if the entity has an identifier property.
*/
static Identifier potentiallyAppendIdentifier(Identifier base, RelationalPersistentEntity<?> entity,
Function<RelationalPersistentProperty, Object> getter) {
Function<RelationalPersistentProperty, Object> getter) {

if (entity.hasIdProperty()) {

Expand Down Expand Up @@ -368,9 +369,16 @@ public <T> T getPropertyValue(RelationalPersistentProperty property) {
// references and possibly keys, that form an id
if (idDefiningParentPath.hasIdProperty()) {

RelationalPersistentProperty identifier = idDefiningParentPath.getRequiredIdProperty();
AggregatePath idPath = idDefiningParentPath.append(identifier);
Object value = delegate.getValue(idPath);
List<AggregatePath> idPaths = getMappingContext().getIdPaths(idDefiningParentPath.getRequiredLeafEntity());
RelationalPersistentProperty identifier = null;
Object value = null;
for (AggregatePath idPath : idPaths) {

// TODO this hack only works for single values.

identifier = idPath.getRequiredLeafProperty();
value = delegate.getValue(idDefiningParentPath.append(idPath));
}

Assert.state(value != null, "Identifier value must not be null at this point");

Expand Down Expand Up @@ -460,7 +468,7 @@ public RelationalPropertyValueProvider withContext(ConversionContext context) {

return context == this.context ? this
: new ResolvingRelationalPropertyValueProvider(delegate.withContext(context), accessor,
(ResolvingConversionContext) context, identifier);
(ResolvingConversionContext) context, identifier);
}
}

Expand All @@ -472,7 +480,7 @@ public RelationalPropertyValueProvider withContext(ConversionContext context) {
* @param identifier
*/
private record ResolvingConversionContext(ConversionContext delegate, AggregatePath aggregatePath,
Identifier identifier) implements ConversionContext {
Identifier identifier) implements ConversionContext {

@Override
public <S> S convert(Object source, TypeInformation<? extends S> typeHint) {
Expand Down
65 changes: 54 additions & 11 deletions spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/SqlGenerator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@
*/
package org.springframework.data.jdbc.core.convert;

import java.time.LocalTime;
import java.util.*;
import java.util.function.Function;
import java.util.stream.Collectors;
Expand All @@ -37,6 +38,7 @@
import org.springframework.data.relational.core.sql.render.SqlRenderer;
import org.springframework.data.util.Lazy;
import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
import org.springframework.lang.NonNull;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

Expand Down Expand Up @@ -451,7 +453,7 @@ String createDeleteAllSql(@Nullable PersistentPropertyPath<RelationalPersistentP
*/
String createDeleteByPath(PersistentPropertyPath<RelationalPersistentProperty> path) {
return createDeleteByPathAndCriteria(mappingContext.getAggregatePath(path),
filterColumn -> filterColumn.isEqualTo(getBindMarker(ROOT_ID_PARAMETER)));
filterColumn -> filterColumn.isEqualTo(getBindMarker(entity.getIdColumn())));
}

/**
Expand All @@ -469,10 +471,27 @@ String createDeleteInByPath(PersistentPropertyPath<RelationalPersistentProperty>

private String createFindOneSql() {

Select select = selectBuilder().where(getIdColumn().isEqualTo(getBindMarker(ID_SQL_PARAMETER))) //
.build();
SelectBuilder.SelectWhereAndOr select = null;

return render(select);
return render(selectBuilder().where(singleIdWhereCondition()).build());
}

private Condition singleIdWhereCondition() {

Condition aggregate = null;
for (Column column : getIdColumns()) {
Comparison condition = column.isEqualTo(getBindMarker(column.getName()));

if (aggregate == null) {
aggregate = condition;
} else {
aggregate = aggregate.and(condition);
}
}

Assert.state(aggregate != null, "We need at least one id column");

return aggregate;
}

private String createAcquireLockById(LockMode lockMode) {
Expand Down Expand Up @@ -632,19 +651,26 @@ Join getJoin(AggregatePath path) {

private String createFindAllInListSql() {

Select select = selectBuilder().where(getIdColumn().in(getBindMarker(IDS_SQL_PARAMETER))).build();
In condition = multiIdWhereClause();
Select select = selectBuilder().where(condition).build();

return render(select);
}

private String createExistsSql() {
private In multiIdWhereClause() {

List<Column> idColumns = getIdColumns();
TupleExpression tuple = TupleExpression.create(idColumns);
return Conditions.in(tuple, getBindMarker(IDS_SQL_PARAMETER));
}

private String createExistsSql() {
Table table = getTable();

Select select = StatementBuilder //
.select(Functions.count(getIdColumn())) //
.from(table) //
.where(getIdColumn().isEqualTo(getBindMarker(ID_SQL_PARAMETER))) //
.where(singleIdWhereCondition()) //
.build();

return render(select);
Expand Down Expand Up @@ -715,7 +741,7 @@ private UpdateBuilder.UpdateWhereAndOr createBaseUpdate() {
return Update.builder() //
.table(table) //
.set(assignments) //
.where(getIdColumn().isEqualTo(getBindMarker(entity.getIdColumn())));
.where(singleIdWhereCondition());
}

private String createDeleteByIdSql() {
Expand All @@ -738,13 +764,13 @@ private String createDeleteByIdAndVersionSql() {
private DeleteBuilder.DeleteWhereAndOr createBaseDeleteById(Table table) {

return Delete.builder().from(table) //
.where(getIdColumn().isEqualTo(getBindMarker(ID_SQL_PARAMETER)));
.where(singleIdWhereCondition());
}

private DeleteBuilder.DeleteWhereAndOr createBaseDeleteByIdIn(Table table) {

return Delete.builder().from(table) //
.where(getIdColumn().in(getBindMarker(IDS_SQL_PARAMETER)));
.where(multiIdWhereClause());
}

private String createDeleteByPathAndCriteria(AggregatePath path, Function<Column, Condition> rootCondition) {
Expand Down Expand Up @@ -804,7 +830,24 @@ private Table getTable() {
}

private Column getIdColumn() {
return sqlContext.getIdColumn();

List<AggregatePath> idPaths = mappingContext.getIdPaths(entity);

AggregatePath idAggregatePath = idPaths.get(0);// TODO: hack for single column

return sqlContext.getColumn(idAggregatePath);
}

private List<Column> getIdColumns() {

List<AggregatePath> idPaths = mappingContext.getIdPaths(entity);

List<Column> result = new ArrayList<>(idPaths.size());

for (AggregatePath idPath : idPaths) {
result.add(sqlContext.getColumn(idPath));
}
return result;
}

private Column getVersionColumn() {
Expand Down
80 changes: 69 additions & 11 deletions ...a-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/SqlParametersFactory.java
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,9 @@
import org.springframework.data.jdbc.support.JdbcUtil;
import org.springframework.data.mapping.PersistentProperty;
import org.springframework.data.mapping.PersistentPropertyAccessor;
import org.springframework.data.mapping.PersistentPropertyPathAccessor;
import org.springframework.data.relational.core.conversion.IdValueSource;
import org.springframework.data.relational.core.mapping.AggregatePath;
import org.springframework.data.relational.core.mapping.RelationalMappingContext;
import org.springframework.data.relational.core.mapping.RelationalPersistentEntity;
import org.springframework.data.relational.core.mapping.RelationalPersistentProperty;
Expand Down Expand Up @@ -78,9 +80,13 @@ <T> SqlIdentifierParameterSource forInsert(T instance, Class<T> domainType, Iden

if (IdValueSource.PROVIDED.equals(idValueSource)) {

RelationalPersistentProperty idProperty = persistentEntity.getRequiredIdProperty();
Object idValue = persistentEntity.getIdentifierAccessor(instance).getRequiredIdentifier();
addConvertedPropertyValue(parameterSource, idProperty, idValue, idProperty.getColumnName());
PersistentPropertyPathAccessor<T> propertyPathAccessor = persistentEntity.getPropertyPathAccessor(instance);
for (AggregatePath idPath : context.getIdPaths(persistentEntity)) {

Object idValue = propertyPathAccessor.getProperty(idPath.getRequiredPersistentPropertyPath());
RelationalPersistentProperty idProperty = idPath.getRequiredLeafProperty();
addConvertedPropertyValue(parameterSource, idProperty, idValue, idProperty.getColumnName());
}
}
return parameterSource;
}
Expand Down Expand Up @@ -112,12 +118,38 @@ <T> SqlIdentifierParameterSource forQueryById(Object id, Class<T> domainType, Sq

SqlIdentifierParameterSource parameterSource = new SqlIdentifierParameterSource();

addConvertedPropertyValue( //
parameterSource, //
getRequiredPersistentEntity(domainType).getRequiredIdProperty(), //
id, //
name //
);
RelationalPersistentEntity<T> entity = getRequiredPersistentEntity(domainType);

RelationalPersistentProperty singleIdProperty = entity.getRequiredIdProperty();

if (singleIdProperty.isEntity()) {

RelationalPersistentEntity<?> complexId = context.getPersistentEntity(singleIdProperty);
PersistentPropertyPathAccessor<Object> accessor = complexId.getPropertyPathAccessor(id);

List<AggregatePath> idPaths = context.getIdPaths(entity);

for (AggregatePath idPath : idPaths) {
AggregatePath idElementPath = idPath.getTail();
Object idValue = accessor.getProperty(idElementPath.getRequiredPersistentPropertyPath());

addConvertedPropertyValue( //
parameterSource, //
idElementPath.getRequiredLeafProperty(), //
idValue, //
idElementPath.getColumnInfo().name() //
);
}

} else {

addConvertedPropertyValue( //
parameterSource, //
singleIdProperty, //
id, //
singleIdProperty.getColumnName() //
);
}
return parameterSource;
}

Expand All @@ -133,9 +165,35 @@ <T> SqlIdentifierParameterSource forQueryByIds(Iterable<?> ids, Class<T> domainT

SqlIdentifierParameterSource parameterSource = new SqlIdentifierParameterSource();

addConvertedPropertyValuesAsList(parameterSource, getRequiredPersistentEntity(domainType).getRequiredIdProperty(),
ids);
RelationalPersistentEntity<?> entity = context.getPersistentEntity(domainType);
RelationalPersistentProperty singleIdProperty = entity.getRequiredIdProperty();

if (singleIdProperty.isEntity()) {

RelationalPersistentEntity<?> complexId = context.getPersistentEntity(singleIdProperty);
List<AggregatePath> idPaths = context.getIdPaths(entity);

List<Object[]> parameterValues = new ArrayList<>();

for (Object id : ids) {

PersistentPropertyPathAccessor<Object> accessor = complexId.getPropertyPathAccessor(id);

Object[] tuple = new Object[idPaths.size()];
int index = 0;
for (AggregatePath idPath : idPaths) {
AggregatePath idElementPath = idPath.getTail();
tuple[index] = accessor.getProperty(idElementPath.getRequiredPersistentPropertyPath());
index++;
}
parameterValues.add(tuple);
}

parameterSource.addValue(SqlGenerator.IDS_SQL_PARAMETER, parameterValues);
} else {
addConvertedPropertyValuesAsList(parameterSource, getRequiredPersistentEntity(domainType).getRequiredIdProperty(),
ids);
}
return parameterSource;
}

Expand Down
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