io.odysz.transact.sql.parts.update.SetList Maven / Gradle / Ivy
package io.odysz.transact.sql.parts.update;
import java.util.ArrayList;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import io.odysz.semantics.ISemantext;
import io.odysz.transact.sql.parts.AbsPart;
import io.odysz.transact.sql.parts.Colname;
import io.odysz.transact.sql.parts.Tabl;
import io.odysz.transact.sql.parts.condition.ExprPart;
import io.odysz.transact.x.TransException;
/**The SET clause equetions' list:
* col= v1, c2 = 'v2', ...
* This class use {@link SetValue} as element type.
* @author [email protected]
*/
public class SetList extends AbsPart {
private ArrayList nvs;
public SetList(ArrayList nvs) {
this.nvs = nvs;
}
private Tabl tabl;
/**These values are set value to tabl.col.
* Some times this information is used for handling expression,
* like {@link io.odysz.transact.sql.parts.condition.Funcall.Func#extFile extFile}
* will use this to handle external file at committing succeed.
* @param table
* @return this
*/
public SetList setVal2(Tabl table) {
this.tabl = table;
return this;
}
@Override
public String sql(ISemantext context) {
if (nvs == null)
return "";
else
return nvs.stream().map(nv -> {
String s = Stream.of(
// new ExprPart((String) nv[0]), new ExprPart("="),
Colname.parseFullname((String) nv[0]), new ExprPart("="),
new SetValue(nv[1]).setVal2(tabl, (String) nv[0]))
.map(m -> {
try {
return m.sql(context);
} catch (TransException e) {
e.printStackTrace();
return "";
}
}).collect(Collectors.joining(""));
return s;
}).collect(Collectors.joining(", "));
}
}