protected void addCriteria(final String column, final String operator) {
        if (this.sbClause.isEmpty()) {
            this.sbClause.append("WHERE");
        } else {
            this.sbClause.append(" AND");
        }
        this.sbClause.append(' ');
        this.sbClause.append(column);
        this.sbClause.append(' ');
        this.sbClause.append(operator);
        this.sbClause.append(" ?");
    }
Adds a parameterized selection criterion of the form "column [operator] ?".
to the where clause.

@param column Database column name.
@param operator the operator to use to separate.
support/cas-server-support-audit-jdbc/src/main/java/org/apereo/inspektr/audit/support/AbstractWhereClauseMatchCriteria.java