@Override
public String export() {
if (expression == null) {
return "ON " + fullKeyspace;
} else {
if (additionalExpressions == null || additionalExpressions.length == 0) {
return "ON " + fullKeyspace + "(" + expression.toString() + ")";
} else {
StringBuilder on = new StringBuilder("ON ");
on.append(fullKeyspace).append('(').append(expression);
for (Expression additionalExpression : additionalExpressions) {
on.append(", ").append(additionalExpression.toString());
}
on.append(')');
return on.toString();
}
}
}
@Override
public Expression end() {
StringBuilder result = new StringBuilder("CASE ");
if (caseExpression != null) {
result.append(caseExpression.toString()).append(' ');
}
for (int i = 0; i < count; i++) {
result
.append("WHEN ")
.append(whens.get(i))
.append(" THEN ")
.append(thens.get(i))
.append(", ");
}
result.delete(result.length() - 2, result.length());
if (elseResult != null) {
result.append(" ELSE ").append(elseResult.toString());
}
result.append(" END");
return x(result.toString());
}
@Override
public ThenClause when(Expression conditionOrExpression) {
whens.add(conditionOrExpression);
thens.add(Expression.NULL());
return this;
}