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 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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,
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 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
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package org.apache.cayenne.exp.parser;

import java.io.IOException;
import java.util.List;

import org.apache.cayenne.exp.ExpressionException;

/**
 * Common node for likeIgnoreCase and notLikeIgnoreCase
 */
abstract class IgnoreCaseNode extends PatternMatchNode {
    IgnoreCaseNode(int i, boolean ignoringCase) {
        super(i, ignoringCase);
    }

    IgnoreCaseNode(int i, boolean ignoringCase, char escapeChar) {
        super(i, ignoringCase, escapeChar);
    }

    @Override
    protected void appendChildrenAsEJBQL(List<Object> parameterAccumulator, Appendable out, String rootId) throws IOException {
        // with like, first expression is always path, second is a literal,
        // which must be uppercased
        out.append("upper(");
        ((SimpleNode) children[0]).appendAsEJBQL(parameterAccumulator, out, rootId);
        out.append(") ");
        out.append(getEJBQLExpressionOperator(0));
        out.append(" ");

        Object literal = ((ASTScalar) children[1]).getValue();
        if (!(literal instanceof String)) {
            throw new ExpressionException("Literal value should be a string");
        }
        SimpleNode.encodeScalarAsEJBQL(parameterAccumulator, out, ((String) literal).toUpperCase());
    }
}