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Diffstat (limited to 'src/main/java/com/healthmarketscience/jackcess/impl/TableDefinitionImpl.java')
-rw-r--r-- | src/main/java/com/healthmarketscience/jackcess/impl/TableDefinitionImpl.java | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/main/java/com/healthmarketscience/jackcess/impl/TableDefinitionImpl.java b/src/main/java/com/healthmarketscience/jackcess/impl/TableDefinitionImpl.java new file mode 100644 index 0000000..6c918bd --- /dev/null +++ b/src/main/java/com/healthmarketscience/jackcess/impl/TableDefinitionImpl.java @@ -0,0 +1,60 @@ +/* +Copyright (c) 2022 James Ahlborn + +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 + + http://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 com.healthmarketscience.jackcess.impl; + +import java.io.IOException; +import java.nio.ByteBuffer; +import java.util.List; + +/** + * A database table definition which does not allow any actual data + * interaction (read or write). + * <p> + * Note, in an ideal world, TableImpl would extend TableDefinitionImpl. + * However, since TableDefinitionImpl came later, it was easier to do it this + * way and avoid a lot of unnecessary code shuffling. + * <p> + * Is not thread-safe. + * + * @author James Ahlborn + * @usage _advanced_class_ + */ +public class TableDefinitionImpl extends TableImpl +{ + protected TableDefinitionImpl(DatabaseImpl database, ByteBuffer tableBuffer, + int pageNumber, String name, int flags) + throws IOException { + super(database, tableBuffer, pageNumber, name, flags); + } + + @Override + protected List<? extends Object[]> addRows(List<? extends Object[]> rows, + final boolean isBatchWrite) + throws IOException { + // all row additions eventually flow through this method + throw new UnsupportedOperationException( + withErrorContext("TableDefinition has no data access")); + } + + @Override + public RowState createRowState() { + // RowState is needed for all traversal operations, so this kills any data + // reading as well as update/delete methods + throw new UnsupportedOperationException( + withErrorContext("TableDefinition has no data access")); + } +} |