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SqlParameterSourceUtils.createBatch with Collection support 

Issue: SPR-16215
This commit is contained in:
Juergen Hoeller 2017-11-19 21:17:24 +01:00
parent 20fcefc647
commit a8b48848b9
3 changed files with 54 additions and 33 deletions
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4
spring-jdbc/src/main/java/org/springframework/jdbc/core/BatchUpdateUtils.java
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@ -23,8 +23,8 @@ import java.util.List;
import org.springframework.lang.Nullable;
/**
* Generic utility methods for working with JDBC batch statements. Mainly for internal use
* within the framework.
* Generic utility methods for working with JDBC batch statements.
* Mainly for internal use within the framework.
*
* @author Thomas Risberg
* @since 3.0

8
spring-jdbc/src/main/java/org/springframework/jdbc/core/namedparam/NamedParameterJdbcTemplate.java
View File

@ -337,13 +337,7 @@ public class NamedParameterJdbcTemplate implements NamedParameterJdbcOperations
@Override
public int[] batchUpdate(String sql, Map<String, ?>[] batchValues) {
SqlParameterSource[] batchArgs = new SqlParameterSource[batchValues.length];
int i = 0;
for (Map<String, ?> values : batchValues) {
batchArgs[i] = new MapSqlParameterSource(values);
i++;
}
return batchUpdate(sql, batchArgs);
return batchUpdate(sql, SqlParameterSourceUtils.createBatch(batchValues));
}
@Override

75
spring-jdbc/src/main/java/org/springframework/jdbc/core/namedparam/SqlParameterSourceUtils.java
View File

@ -16,6 +16,8 @@
package org.springframework.jdbc.core.namedparam;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
@ -23,47 +25,72 @@ import org.springframework.jdbc.core.SqlParameterValue;
import org.springframework.lang.Nullable;
/**
* Class that provides helper methods for the use of {@link SqlParameterSource}
* with {@code SimpleJdbc} classes.
* Class that provides helper methods for the use of {@link SqlParameterSource},
* in particular with {@link NamedParameterJdbcTemplate}.
*
* @author Thomas Risberg
* @author Juergen Hoeller
* @since 2.5
*/
public class SqlParameterSourceUtils {
public abstract class SqlParameterSourceUtils {
/**
* Create an array of MapSqlParameterSource objects populated with data from the
* values passed in. This will define what is included in a batch operation.
* @param valueMaps array of Maps containing the values to be used
* @return an array of SqlParameterSource
* Create an array of {@link SqlParameterSource} objects populated with data
* from the values passed in (either a {@link Map} or a bean object).
* This will define what is included in a batch operation.
* @param candidates object array of objects containing the values to be used
* @return an array of {@link SqlParameterSource}
* @see MapSqlParameterSource
* @see BeanPropertySqlParameterSource
* @see NamedParameterJdbcTemplate#batchUpdate(String, SqlParameterSource[]))
*/
public static SqlParameterSource[] createBatch(Map<String, ?>[] valueMaps) {
MapSqlParameterSource[] batch = new MapSqlParameterSource[valueMaps.length];
for (int i = 0; i < valueMaps.length; i++) {
Map<String, ?> valueMap = valueMaps[i];
batch[i] = new MapSqlParameterSource(valueMap);
@SuppressWarnings("unchecked")
public static SqlParameterSource[] createBatch(Object... candidates) {
return createBatch(Arrays.asList(candidates));
}
/**
* Create an array of {@link SqlParameterSource} objects populated with data
* from the values passed in (either a {@link Map} or a bean object).
* This will define what is included in a batch operation.
* @param candidates collection of objects containing the values to be used
* @return an array of {@link SqlParameterSource}
* @since 5.0.2
* @see MapSqlParameterSource
* @see BeanPropertySqlParameterSource
* @see NamedParameterJdbcTemplate#batchUpdate(String, SqlParameterSource[]))
*/
@SuppressWarnings("unchecked")
public static SqlParameterSource[] createBatch(Collection<?> candidates) {
SqlParameterSource[] batch = new SqlParameterSource[candidates.size()];
int i = 0;
for (Object candidate : candidates) {
batch[i] = (candidate instanceof Map ? new MapSqlParameterSource((Map<String, ?>) candidate) :
new BeanPropertySqlParameterSource(candidate));
i++;
}
return batch;
}
/**
* Create an array of BeanPropertySqlParameterSource objects populated with data
* from the values passed in. This will define what is included in a batch operation.
* @param beans object array of beans containing the values to be used
* @return an array of SqlParameterSource
* Create an array of {@link MapSqlParameterSource} objects populated with data from
* the values passed in. This will define what is included in a batch operation.
* @param valueMaps array of {@link Map} instances containing the values to be used
* @return an array of {@link SqlParameterSource}
* @see MapSqlParameterSource
* @see NamedParameterJdbcTemplate#batchUpdate(String, Map[])
*/
public static SqlParameterSource[] createBatch(Object[] beans) {
BeanPropertySqlParameterSource[] batch = new BeanPropertySqlParameterSource[beans.length];
for (int i = 0; i < beans.length; i++) {
Object bean = beans[i];
batch[i] = new BeanPropertySqlParameterSource(bean);
public static SqlParameterSource[] createBatch(Map<String, ?>[] valueMaps) {
SqlParameterSource[] batch = new SqlParameterSource[valueMaps.length];
for (int i = 0; i < valueMaps.length; i++) {
batch[i] = new MapSqlParameterSource(valueMaps[i]);
}
return batch;
}
/**
* Create a wrapped value if parameter has type information, plain object if not.
* @param source the source of paramer values and type information
* @param source the source of parameter values and type information
* @param parameterName the name of the parameter
* @return the value object
*/
@ -85,13 +112,13 @@ public class SqlParameterSourceUtils {
/**
* Create a Map of case insensitive parameter names together with the original name.
* @param parameterSource the source of paramer names
* @param parameterSource the source of parameter names
* @return the Map that can be used for case insensitive matching of parameter names
*/
public static Map<String, String> extractCaseInsensitiveParameterNames(SqlParameterSource parameterSource) {
Map<String, String> caseInsensitiveParameterNames = new HashMap<>();
if (parameterSource instanceof BeanPropertySqlParameterSource) {
String[] propertyNames = ((BeanPropertySqlParameterSource)parameterSource).getReadablePropertyNames();
String[] propertyNames = ((BeanPropertySqlParameterSource) parameterSource).getReadablePropertyNames();
for (String name : propertyNames) {
caseInsensitiveParameterNames.put(name.toLowerCase(), name);
}