Remove redundant blank chars and lines in codes

shardingsphere-infra/shardingsphere-infra-common/src/main/java/org/apache/shardingsphere/infra/state/StateContext.java

@@ -33,7 +33,7 @@ public final class StateContext {
      * Switch state.
      *
      * @param type state type
-     * @param on true if state type is valid, false if not            
+     * @param on true if state type is valid, false if not
      */
     public void switchState(final StateType type, final boolean on) {
         if (on) {

shardingsphere-infra/shardingsphere-infra-context/src/main/java/org/apache/shardingsphere/infra/context/refresher/MetaDataRefresher.java

@@ -41,7 +41,7 @@ public interface MetaDataRefresher<T extends SQLStatement> extends TypedSPI {
      * Refresh schema.
      *
      * @param databaseMetaData database meta data
-     * @param database federation database meta data                      
+     * @param database federation database meta data
      * @param optimizerPlanners optimizer planners
      * @param logicDataSourceNames route data source names
      * @param schemaName schema name

shardingsphere-infra/shardingsphere-infra-federation/shardingsphere-infra-federation-executor/src/main/java/org/apache/shardingsphere/infra/federation/executor/FederationExecutorFactory.java

@@ -35,7 +35,7 @@ public final class FederationExecutorFactory {
      * 
      * @param databaseName database name
      * @param schemaName schema name
-     * @param optimizerContext filterable optimizer context 
+     * @param optimizerContext filterable optimizer context
      * @param props configuration properties
      * @param jdbcExecutor jdbc executor
      * @return created instance

shardingsphere-kernel/shardingsphere-data-pipeline/shardingsphere-data-pipeline-core/src/main/java/org/apache/shardingsphere/data/pipeline/core/metadata/generator/PipelineDDLGenerator.java

@@ -162,7 +162,6 @@ private String decorateIndexAndConstraint(final ShardingSphereDatabaseMetaData d
             if (sqlStatementContext instanceof ConstraintAvailable) {
                 result = decorateConstraint((ConstraintAvailable) sqlStatementContext, result, tableNameSegment);
             }
-
         }
         return result;
     }

shardingsphere-kernel/shardingsphere-data-pipeline/shardingsphere-data-pipeline-core/src/main/java/org/apache/shardingsphere/data/pipeline/scenario/rulealtered/prepare/InventoryTaskSplitter.java

@@ -180,7 +180,6 @@ private PipelineColumnMetaData mustGetAnAppropriateUniqueKeyColumn(final Pipelin
             if (!column.isNullable()) {
                 return column;
             }
-
         }
         throw new PipelineJobCreationException(
                 String.format("Can not split range for table %s, reason: table contains multiple unique index or unique index contains nullable/multiple column(s)", tableName));

shardingsphere-kernel/shardingsphere-data-pipeline/shardingsphere-data-pipeline-dialect/shardingsphere-data-pipeline-postgresql/src/main/java/org/apache/shardingsphere/data/pipeline/postgresql/ingest/wal/decode/TestDecodingPlugin.java

@@ -85,7 +85,6 @@ private AbstractRowEvent readTableEvent(final ByteBuffer data) {
     private AbstractRowEvent readWriteRowEvent(final ByteBuffer data) {
         WriteRowEvent result = new WriteRowEvent();
         List<Object> afterColumns = new LinkedList<>();
-
         while (data.hasRemaining()) {
             afterColumns.add(readColumn(data));
         }
@@ -96,7 +95,6 @@ private AbstractRowEvent readWriteRowEvent(final ByteBuffer data) {
     private AbstractRowEvent readUpdateRowEvent(final ByteBuffer data) {
         UpdateRowEvent result = new UpdateRowEvent();
         List<Object> afterColumns = new LinkedList<>();
-
         while (data.hasRemaining()) {
             afterColumns.add(readColumn(data));
         }
@@ -107,7 +105,6 @@ private AbstractRowEvent readUpdateRowEvent(final ByteBuffer data) {
     private AbstractRowEvent readDeleteRowEvent(final ByteBuffer data) {
         DeleteRowEvent result = new DeleteRowEvent();
         List<Object> afterColumns = new LinkedList<>();
-
         while (data.hasRemaining()) {
             afterColumns.add(readColumn(data));
         }

shardingsphere-kernel/shardingsphere-single-table/shardingsphere-single-table-core/src/main/java/org/apache/shardingsphere/singletable/route/engine/SingleTableRouteEngine.java

@@ -28,7 +28,7 @@ public interface SingleTableRouteEngine {
     /**
      * Route.
      *
-     * @param routeContext route context 
+     * @param routeContext route context
      * @param singleTableRule single table rule
      */
     void route(RouteContext routeContext, SingleTableRule singleTableRule);

shardingsphere-mode/shardingsphere-mode-core/src/main/java/org/apache/shardingsphere/mode/metadata/persist/node/DatabaseMetaDataNode.java

@@ -48,7 +48,7 @@ public final class DatabaseMetaDataNode {
      * Get meta data data source path.
      *
      * @param databaseName database name
-     * @param version data source version                  
+     * @param version data source version
      * @return data source path
      */
     public static String getMetaDataDataSourcePath(final String databaseName, final String version) {
@@ -78,7 +78,7 @@ public static String getDatabaseNamePath(final String databaseName) {
      * Get rule path.
      *
      * @param databaseName database name
-     * @param version rule version                  
+     * @param version rule version
      * @return rule path
      */
     public static String getRulePath(final String databaseName, final String version) {

shardingsphere-mode/shardingsphere-mode-core/src/main/java/org/apache/shardingsphere/mode/metadata/persist/service/ComputeNodePersistService.java

@@ -46,7 +46,7 @@ public final class ComputeNodePersistService {
      * 
      * @param instanceId instance id
      * @param labels collection of label
-     * @param isOverwrite whether overwrite registry center's configuration if existed              
+     * @param isOverwrite whether overwrite registry center's configuration if existed
      */
     public void persistInstanceLabels(final String instanceId, final Collection<String> labels, final boolean isOverwrite) {
         if (null != labels && !labels.isEmpty() && (isOverwrite || !isExisted(instanceId))) {

shardingsphere-proxy/shardingsphere-proxy-backend/src/main/java/org/apache/shardingsphere/proxy/backend/response/header/query/QueryHeaderBuilderEngine.java

@@ -43,7 +43,7 @@ public final class QueryHeaderBuilderEngine {
      *
      * @param queryResultMetaData query result meta data
      * @param databaseMetaData database meta data
-     * @param columnIndex column index 
+     * @param columnIndex column index
      * @param dataNodeContainedRule data node contained rule
      * @return query header
      * @throws SQLException SQL exception

shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-opengauss/src/main/java/org/apache/shardingsphere/sql/parser/opengauss/visitor/statement/impl/OpenGaussStatementSQLVisitor.java

@@ -715,7 +715,6 @@ public ASTNode visitInsertColumnItem(final InsertColumnItemContext ctx) {
                     new IdentifierValue(ctx.optIndirection().indirectionEl().attrName().getText()));
             result.setOwner(new OwnerSegment(ctx.colId().start.getStartIndex(), ctx.colId().stop.getStopIndex(), new IdentifierValue(ctx.colId().getText())));
             return result;
-
         } else {
             return new ColumnSegment(ctx.colId().start.getStartIndex(), ctx.colId().stop.getStopIndex(), new IdentifierValue(ctx.colId().getText()));
         }

shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/java/org/apache/shardingsphere/sql/parser/postgresql/visitor/statement/impl/PostgreSQLStatementSQLVisitor.java

@@ -682,7 +682,6 @@ public ASTNode visitInsertColumnItem(final InsertColumnItemContext ctx) {
                     new IdentifierValue(ctx.optIndirection().indirectionEl().attrName().getText()));
             result.setOwner(new OwnerSegment(ctx.colId().start.getStartIndex(), ctx.colId().stop.getStopIndex(), new IdentifierValue(ctx.colId().getText())));
             return result;
-
         } else {
             return new ColumnSegment(ctx.colId().start.getStartIndex(), ctx.colId().stop.getStopIndex(), new IdentifierValue(ctx.colId().getText()));
         }

shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/asserts/segment/definition/ColumnPositionAssert.java

@@ -56,7 +56,6 @@ public static void assertIs(final SQLCaseAssertContext assertContext, final Colu
         if (actual instanceof ColumnAfterPositionSegment) {
             assertNotNull(assertContext.getText("Assignments should exist."), expected.getColumn());
             assertThat(assertContext.getText("Column change position after name assertion error: "), actual.getColumnName().getIdentifier().getValue(), is(expected.getColumn().getName()));
-
         } else {
             assertNull(assertContext.getText("Assignments should not exist."), expected.getColumn());
         }

shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/asserts/statement/distsql/rdl/alter/impl/AlterDatabaseDiscoveryRuleStatementAssert.java

@@ -61,7 +61,6 @@ public static void assertIs(final SQLCaseAssertContext assertContext, final Alte
         } else {
             assertNotNull(assertContext.getText("Actual statement should exist."), actual);
             assertDatabaseDiscoveryRules(assertContext, actual.getRules(), expected);
-
         }
     }
 

shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/loader/CasesLoader.java

@@ -70,7 +70,7 @@ private Map<String, Case> loadFromTargetDirectory(final String path) throws JAXB
     /**
      * build case map.
      * @param caseMap result map
-     * @param inputStream xml inputStream 
+     * @param inputStream xml inputStream
      * @throws JAXBException JAXBException
      */
     protected abstract void buildCaseMap(Map<String, Case> caseMap, InputStream inputStream) throws JAXBException;