/**
* Parse the SQL fragment and generate SQL with parameter placeholders and list of getters.
*
* @param types parameter types
* @param builder builder for output SQL
* @param mappers parameters mapping configs
*/
private List<ParameterMappingConfig> configureTypes(Type[] types, StringBuilder builder) {
List<ParameterMappingConfig> mappers = new ArrayList<ParameterMappingConfig>();
int pos = 0;
while (pos < sql.length()) {
// TODO: Add support for out parameters!
int start = sql.indexOf("${", pos);
if (start == -1) {
builder.append(sql.substring(pos));
break;
}
int end = sql.indexOf("}", start + 2);
if (end == -1) {
builder.append(sql.substring(pos));
break;
}
builder.append(sql.substring(pos, start));
String parameter = sql.substring(start + 2, end);
// TODO: Add support for lists, which should expand into something
// like (?, ?, ?, ?)
// For, example ${prop[]} with prop = int[] { 1, 2, 3} will expand
// into ?, ?, ? with
// parameters 1, 2 and 3.
builder.append('?');
try {
// TODO: Remove this code to separate class (parameter config?)
boolean in = true;
boolean out = false;
String prop;
int comma = parameter.indexOf(',');
if (comma != -1) {
prop = parameter.substring(0, comma);
String type = parameter.substring(comma + 1);
if ("type=IN".equals(type)) {
// Nothing, the default
} else if ("type=INOUT".equals(type)) {
out = true;
} else if ("type=OUT".equals(type)) {
out = true;
in = false;
} else {
throw new IllegalArgumentException("Invalid parameter: " + parameter);
}
} else {
prop = parameter;
}
Getter getter = introspectionFactory.buildParameterGetter(types, prop);
Type type = getter.getType();
Setter setter = out ? introspectionFactory.buildParameterSetter(types, prop) : null;
ParameterMappingConfig paramMapper =
new ParameterMappingConfig(type, in ? getter : null, setter);
mappers.add(paramMapper);
} catch (IllegalArgumentException e) {
throw new IllegalArgumentException(
"Failed to create parameter getter for "
+ " (failed property marked by $[]): "
+ sql.substring(0, start)
+ "$["
+ parameter
+ ']'
+ sql.substring(end),
e);
}
pos = end + 1;
}
return mappers;
}