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Этот коммит содержится в:
Ihar Hancharenka
родитель
39c253aac4
Коммит
888843626a
@ -21,6 +21,411 @@ public class JdbcAggregateTemplate implements JdbcAggregateOperations {
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}
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class AggregateChangeExecutor {
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private final JdbcConverter converter;
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private final DataAccessStrategy accessStrategy;
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...
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<T> List<T> executeSave(AggregateChange<T> aggregateChange) {
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JdbcAggregateChangeExecutionContext executionContext = new JdbcAggregateChangeExecutionContext(converter,
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accessStrategy);
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aggregateChange.forEachAction(action -> execute(action, executionContext));
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return executionContext.populateIdsIfNecessary();
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}
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...
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private void execute(DbAction<?> action, JdbcAggregateChangeExecutionContext executionContext) {
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try {
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if (action instanceof DbAction.InsertRoot<?> insertRoot) {
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executionContext.executeInsertRoot(insertRoot);
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} else if (action instanceof DbAction.BatchInsertRoot<?> batchInsertRoot) {
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executionContext.executeBatchInsertRoot(batchInsertRoot);
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} else if (action instanceof DbAction.Insert<?> insert) {
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executionContext.executeInsert(insert);
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} else if (action instanceof DbAction.BatchInsert<?> batchInsert) {
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executionContext.executeBatchInsert(batchInsert);
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} else if (action instanceof DbAction.UpdateRoot<?> updateRoot) {
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executionContext.executeUpdateRoot(updateRoot);
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} else if (action instanceof DbAction.Delete<?> delete) {
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executionContext.executeDelete(delete);
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} else if (action instanceof DbAction.BatchDelete<?> batchDelete) {
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executionContext.executeBatchDelete(batchDelete);
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} else if (action instanceof DbAction.DeleteAll<?> deleteAll) {
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executionContext.executeDeleteAll(deleteAll);
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} else if (action instanceof DbAction.DeleteRoot<?> deleteRoot) {
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executionContext.executeDeleteRoot(deleteRoot);
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} else if (action instanceof DbAction.BatchDeleteRoot<?> batchDeleteRoot) {
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executionContext.executeBatchDeleteRoot(batchDeleteRoot);
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} else if (action instanceof DbAction.DeleteAllRoot<?> deleteAllRoot) {
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executionContext.executeDeleteAllRoot(deleteAllRoot);
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} else if (action instanceof DbAction.AcquireLockRoot<?> acquireLockRoot) {
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executionContext.executeAcquireLock(acquireLockRoot);
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} else if (action instanceof DbAction.AcquireLockAllRoot<?> acquireLockAllRoot) {
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executionContext.executeAcquireLockAllRoot(acquireLockAllRoot);
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} else {
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throw new RuntimeException("unexpected action");
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}
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} catch (Exception e) {
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if (e instanceof OptimisticLockingFailureException) {
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throw e;
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}
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throw new DbActionExecutionException(action, e);
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}
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}
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}
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@SuppressWarnings("rawtypes")
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class JdbcAggregateChangeExecutionContext {
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private final RelationalMappingContext context;
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private final JdbcConverter converter;
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private final DataAccessStrategy accessStrategy;
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private final Map<DbAction<?>, DbActionExecutionResult> results = new LinkedHashMap<>();
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...
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<T> void executeInsertRoot(DbAction.InsertRoot<T> insert) {
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Object id = accessStrategy.insert(insert.getEntity(), insert.getEntityType(), Identifier.empty(),
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insert.getIdValueSource());
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add(new DbActionExecutionResult(insert, id));
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}
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...
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}
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package org.springframework.data.jdbc.core.convert;
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public interface DataAccessStrategy extends ReadingDataAccessStrategy, RelationResolver {
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...
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...
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}
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core/convert/DefaultDataAccessStrategy.java
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core/convert/DelegatingDataAccessStrategy.java
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core/convert/CascadingDataAccessStrategy.java
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public class DefaultDataAccessStrategy implements DataAccessStrategy {
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private final SqlGeneratorSource sqlGeneratorSource;
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private final RelationalMappingContext context;
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private final JdbcConverter converter;
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private final NamedParameterJdbcOperations operations;
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private final SqlParametersFactory sqlParametersFactory;
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private final InsertStrategyFactory insertStrategyFactory;
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...
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@Override
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public <T> Object insert(T instance, Class<T> domainType, Identifier identifier, IdValueSource idValueSource) {
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SqlIdentifierParameterSource parameterSource = sqlParametersFactory.forInsert(instance, domainType, identifier,
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idValueSource);
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String insertSql = sql(domainType).getInsert(parameterSource.getIdentifiers());
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return insertStrategyFactory.insertStrategy(idValueSource, getIdColumn(domainType)).execute(insertSql,
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parameterSource);
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}
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private SqlGenerator sql(Class<?> domainType) {
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return sqlGeneratorSource.getSqlGenerator(domainType);
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}
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...
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}
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core/convert/DataAccessStrategyFactory.java
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public class SqlGeneratorSource {
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private final Map<Class<?>, SqlGenerator> CACHE = new ConcurrentReferenceHashMap<>();
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private final RelationalMappingContext context;
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private final JdbcConverter converter;
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private final Dialect dialect;
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public Dialect getDialect() {
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return dialect;
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}
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SqlGenerator getSqlGenerator(Class<?> domainType) {
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return CACHE.computeIfAbsent(domainType,
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t -> new SqlGenerator(context, converter, context.getRequiredPersistentEntity(t), dialect));
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}
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}
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class SqlGenerator {
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static final SqlIdentifier VERSION_SQL_PARAMETER = SqlIdentifier.unquoted("___oldOptimisticLockingVersion");
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static final SqlIdentifier ID_SQL_PARAMETER = SqlIdentifier.unquoted("id");
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static final SqlIdentifier IDS_SQL_PARAMETER = SqlIdentifier.unquoted("ids");
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static final SqlIdentifier ROOT_ID_PARAMETER = SqlIdentifier.unquoted("rootId");
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/**
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* Length of an aggregate path that is one longer then the root path.
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*/
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private static final int FIRST_NON_ROOT_LENTH = 2;
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private final RelationalPersistentEntity<?> entity;
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private final RelationalMappingContext mappingContext;
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private final RenderContext renderContext;
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private final SqlContext sqlContext;
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private final SqlRenderer sqlRenderer;
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private final Columns columns;
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private final Lazy<String> findOneSql = Lazy.of(this::createFindOneSql);
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private final Lazy<String> findAllSql = Lazy.of(this::createFindAllSql);
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private final Lazy<String> findAllInListSql = Lazy.of(this::createFindAllInListSql);
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private final Lazy<String> existsSql = Lazy.of(this::createExistsSql);
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private final Lazy<String> countSql = Lazy.of(this::createCountSql);
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private final Lazy<String> updateSql = Lazy.of(this::createUpdateSql);
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private final Lazy<String> updateWithVersionSql = Lazy.of(this::createUpdateWithVersionSql);
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private final Lazy<String> deleteByIdSql = Lazy.of(this::createDeleteByIdSql);
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private final Lazy<String> deleteByIdInSql = Lazy.of(this::createDeleteByIdInSql);
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private final Lazy<String> deleteByIdAndVersionSql = Lazy.of(this::createDeleteByIdAndVersionSql);
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private final Lazy<String> deleteByListSql = Lazy.of(this::createDeleteByListSql);
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private final QueryMapper queryMapper;
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private final Dialect dialect;
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...
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String getInsert(Set<SqlIdentifier> additionalColumns) {
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return createInsertSql(additionalColumns);
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}
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private String createInsertSql(Set<SqlIdentifier> additionalColumns) {
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Table table = getTable();
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Set<SqlIdentifier> columnNamesForInsert = new TreeSet<>(Comparator.comparing(SqlIdentifier::getReference));
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columnNamesForInsert.addAll(columns.getInsertableColumns());
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columnNamesForInsert.addAll(additionalColumns);
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InsertBuilder.InsertIntoColumnsAndValuesWithBuild insert = Insert.builder().into(table);
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for (SqlIdentifier cn : columnNamesForInsert) {
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insert = insert.column(table.column(cn));
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}
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if (columnNamesForInsert.isEmpty()) {
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return render(insert.build());
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}
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InsertBuilder.InsertValuesWithBuild insertWithValues = null;
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for (SqlIdentifier cn : columnNamesForInsert) {
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insertWithValues = (insertWithValues == null ? insert : insertWithValues).values(getBindMarker(cn));
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}
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return render(insertWithValues.build());
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}
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private String render(Insert insert) {
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return this.sqlRenderer.render(insert);
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}
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...
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}
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*************************************************************************
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package org.springframework.data.relational.core.sql.render;
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public class SqlRenderer implements Renderer {
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private final RenderContext context;
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...
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@Override
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public String render(Insert insert) {
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InsertStatementVisitor visitor = new InsertStatementVisitor(context);
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insert.visit(visitor);
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return visitor.getRenderedPart().toString();
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}
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...
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}
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class InsertStatementVisitor extends DelegatingVisitor implements PartRenderer {
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private final StringBuilder builder = new StringBuilder();
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private final StringBuilder into = new StringBuilder();
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private final StringBuilder columns = new StringBuilder();
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private final StringBuilder values = new StringBuilder();
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private final IntoClauseVisitor intoClauseVisitor;
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private final ColumnVisitor columnVisitor;
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private final ValuesVisitor valuesVisitor;
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private final RenderContext renderContext;
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...
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// !!! from here !!!
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@Override
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public Delegation doEnter(Visitable segment) {
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if (segment instanceof Into) {
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return Delegation.delegateTo(this.intoClauseVisitor);
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}
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if (segment instanceof Column) {
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return Delegation.delegateTo(this.columnVisitor);
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}
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if (segment instanceof Values) {
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return Delegation.delegateTo(this.valuesVisitor);
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}
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return Delegation.retain();
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}
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@Override
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public Delegation doLeave(Visitable segment) {
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if (segment instanceof Insert) {
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builder.append("INSERT");
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builder.append(" INTO ").append(into);
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addInsertColumnsIfPresent();
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addInsertValuesIfPresentElseDefault();
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return Delegation.leave();
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}
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return Delegation.retain();
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}
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...
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@Override
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public CharSequence getRenderedPart() {
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return builder; // just a StringBuilder
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}
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...
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}
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abstract class DelegatingVisitor implements Visitor {
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...
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@Nullable
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public abstract Delegation doEnter(Visitable segment);
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@Override
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public final void enter(Visitable segment) {
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if (delegation.isEmpty()) {
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Delegation visitor = doEnter(segment);
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Assert.notNull(visitor,
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() -> String.format("Visitor must not be null Caused by %s.doEnter(…)", getClass().getName()));
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Assert.state(!visitor.isLeave(),
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() -> String.format("Delegation indicates leave. Caused by %s.doEnter(…)", getClass().getName()));
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if (visitor.isDelegate()) {
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delegation.push(visitor.getDelegate());
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visitor.getDelegate().enter(segment);
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}
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} else {
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delegation.peek().enter(segment);
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}
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}
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...
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public abstract Delegation doLeave(Visitable segment);
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public final void leave(Visitable segment) {
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doLeave0(segment);
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}
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private Delegation doLeave0(Visitable segment) {
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if (delegation.isEmpty()) {
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return doLeave(segment);
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} else {
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DelegatingVisitor visitor = delegation.peek();
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while (visitor != null) {
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Delegation result = visitor.doLeave0(segment);
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Assert.notNull(visitor,
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() -> String.format("Visitor must not be null Caused by %s.doLeave(…)", getClass().getName()));
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if (visitor == this) {
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if (result.isLeave()) {
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return delegation.isEmpty() ? Delegation.leave() : Delegation.retain();
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}
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return Delegation.retain();
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}
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if (result.isRetain()) {
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return result;
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}
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if (result.isLeave()) {
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if (!delegation.isEmpty()) {
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delegation.pop();
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}
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if (!delegation.isEmpty()) {
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visitor = delegation.peek();
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} else {
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visitor = this;
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}
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}
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}
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}
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return Delegation.leave();
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}
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...
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}
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----------------------------------------------------------------------------------------
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package org.springframework.data.relational.core.sql;
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public interface Insert extends Segment, Visitable {
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/**
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* Creates a new {@link InsertBuilder}.
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*
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* @return a new {@link InsertBuilder}.
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*/
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static InsertBuilder builder() {
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return new DefaultInsertBuilder();
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}
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}
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class DefaultInsert implements Insert {
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private final Into into;
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private final List<Column> columns;
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private final Values values;
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...
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@Override
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public void visit(Visitor visitor) {
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Assert.notNull(visitor, "Visitor must not be null");
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visitor.enter(this);
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into.visit(visitor);
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columns.forEach(it -> it.visit(visitor));
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values.visit(visitor);
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visitor.leave(this);
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}
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...
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}
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