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79 changes: 79 additions & 0 deletions
79
data-jdbc/src/main/java/io/micronaut/data/jdbc/mapper/JdbcTuple.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| /* | ||
| * Copyright 2017-2024 original authors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package io.micronaut.data.jdbc.mapper; | ||
|
|
||
| import io.micronaut.core.annotation.Internal; | ||
| import io.micronaut.core.convert.ConversionService; | ||
| import jakarta.persistence.Tuple; | ||
| import jakarta.persistence.TupleElement; | ||
|
|
||
| import java.util.List; | ||
| import java.util.Map; | ||
|
|
||
| /** | ||
| * An implementation of {@link Tuple}. | ||
| * | ||
| * @author Denis Stepanov | ||
| * @since 4.10 | ||
| */ | ||
| @Internal | ||
| final class JdbcTuple implements Tuple { | ||
|
|
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| private final ConversionService conversionService; | ||
| private final Object[] values; | ||
| private final Map<String, Integer> aliasToPosition; | ||
|
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| public JdbcTuple(ConversionService conversionService, Object[] values, Map<String, Integer> aliasToPosition) { | ||
| this.conversionService = conversionService; | ||
| this.values = values; | ||
| this.aliasToPosition = aliasToPosition; | ||
| } | ||
|
|
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| @Override | ||
| public <X> X get(TupleElement<X> tupleElement) { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
|
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| @Override | ||
| public <X> X get(String alias, Class<X> type) { | ||
| return conversionService.convertRequired(get(alias), type); | ||
| } | ||
|
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| @Override | ||
| public Object get(String alias) { | ||
| return get(aliasToPosition.get(alias)); | ||
| } | ||
|
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| @Override | ||
| public <X> X get(int i, Class<X> type) { | ||
| return conversionService.convertRequired(get(i), type); | ||
| } | ||
|
|
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| @Override | ||
| public Object get(int i) { | ||
| return values[i]; | ||
| } | ||
|
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| @Override | ||
| public Object[] toArray() { | ||
| return values; | ||
| } | ||
|
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| @Override | ||
| public List<TupleElement<?>> getElements() { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
| } |
80 changes: 80 additions & 0 deletions
80
data-jdbc/src/main/java/io/micronaut/data/jdbc/mapper/JdbcTupleMapper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /* | ||
| * Copyright 2017-2024 original authors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package io.micronaut.data.jdbc.mapper; | ||
|
|
||
| import io.micronaut.core.annotation.Internal; | ||
| import io.micronaut.core.convert.ConversionService; | ||
| import io.micronaut.core.util.CollectionUtils; | ||
| import io.micronaut.data.exceptions.DataAccessException; | ||
| import io.micronaut.data.runtime.mapper.sql.SqlTypeMapper; | ||
| import jakarta.persistence.Tuple; | ||
|
|
||
| import java.sql.ResultSet; | ||
| import java.sql.ResultSetMetaData; | ||
| import java.sql.SQLException; | ||
| import java.util.Map; | ||
|
|
||
| /** | ||
| * A mapper of {@link Tuple}. | ||
| * | ||
| * @author Denis Stepanov | ||
| * @since 4.10 | ||
| */ | ||
| @Internal | ||
| public final class JdbcTupleMapper implements SqlTypeMapper<ResultSet, Tuple> { | ||
|
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| private final ConversionService conversionService; | ||
|
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| public JdbcTupleMapper(ConversionService conversionService) { | ||
| this.conversionService = conversionService; | ||
| } | ||
|
|
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| @Override | ||
| public boolean hasNext(ResultSet resultSet) { | ||
| try { | ||
| return resultSet.next(); | ||
| } catch (SQLException e) { | ||
| throw new DataAccessException("Failed to move the result set: " + e.getMessage(), e); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public Tuple map(ResultSet rs, Class<Tuple> type) throws DataAccessException { | ||
| try { | ||
| ResultSetMetaData metaData = rs.getMetaData(); | ||
| Object[] values = new Object[metaData.getColumnCount()]; | ||
| Map<String, Integer> aliasToPosition = CollectionUtils.newHashMap(values.length); | ||
| for (int i = 0; i < values.length; i++) { | ||
| values[i] = rs.getObject(i + 1); | ||
| String alias = metaData.getColumnName(i + 1); | ||
| aliasToPosition.put(alias, i); | ||
| } | ||
| return new JdbcTuple(conversionService, values, aliasToPosition); | ||
| } catch (SQLException e) { | ||
| throw new DataAccessException("Failed to read the result set: " + e.getMessage(), e); | ||
| } | ||
| } | ||
|
|
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| @Override | ||
| public Object read(ResultSet object, String name) { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
|
|
||
| @Override | ||
| public ConversionService getConversionService() { | ||
| return conversionService; | ||
| } | ||
| } |
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