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package org.apache.cayenne.crypto.map;

import java.util.regex.Pattern;

import org.apache.cayenne.map.DbAttribute;

/**
 * A {@link ColumnMapper} that decides on whether a column is encrypted by
 * matching its name against a preset pattern. Only column name is inspected.
 * Table name is ignored.
 * 
 * @since 4.0
 */
public class PatternColumnMapper implements ColumnMapper {

    private Pattern columnNamePattern;

    public PatternColumnMapper(String columnNamePattern) {
        this.columnNamePattern = Pattern.compile(columnNamePattern);
    }

    @Override
    public boolean isEncrypted(DbAttribute column) {
        return columnNamePattern.matcher(column.getName()).find();
    }

}