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- /*
- Copyright (c) 2018 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 com.healthmarketscience.jackcess.expr.Value;
- import com.healthmarketscience.jackcess.impl.expr.Expressionator;
-
- /**
- *
- * @author James Ahlborn
- */
- public class CalcColEvalContext extends RowEvalContext
- {
- private final ColumnImpl _col;
-
- public CalcColEvalContext(ColumnImpl col) {
- super(col.getDatabase());
- _col = col;
- }
-
- CalcColEvalContext setExpr(String exprStr) {
- setExpr(Expressionator.Type.EXPRESSION, exprStr);
- return this;
- }
-
- @Override
- protected TableImpl getTable() {
- return _col.getTable();
- }
-
- @Override
- public Value.Type getResultType() {
- return toValueType(_col.getType());
- }
-
- public Object eval(Object[] row) throws IOException {
- try {
- setRow(row);
- return eval();
- } finally {
- reset();
- }
- }
-
- @Override
- protected String withErrorContext(String msg) {
- return _col.withErrorContext(msg);
- }
- }
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