cayenne-server/src/main/java/org/apache/cayenne/exp/parser/IgnoreCaseNode.java

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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());
    }
}