public BNLJoinExec(
final TaskAttemptContext context,
final JoinNode join,
final PhysicalExec outer,
PhysicalExec inner) {
super(
context,
SchemaUtil.merge(outer.getSchema(), inner.getSchema()),
SchemaUtil.merge(outer.getSchema(), inner.getSchema()),
outer,
inner);
this.joinQual = join.getJoinQual();
this.qualCtx = this.joinQual.newContext();
this.outerTupleSlots = new ArrayList<Tuple>(TUPLE_SLOT_SIZE);
this.innerTupleSlots = new ArrayList<Tuple>(TUPLE_SLOT_SIZE);
this.outerIterator = outerTupleSlots.iterator();
this.innerIterator = innerTupleSlots.iterator();
this.innerEnd = false;
this.outerEnd = false;
// for projection
targetIds = RowStoreUtil.getTargetIds(inSchema, outSchema);
// for join
frameTuple = new FrameTuple();
outputTuple = new VTuple(outSchema.getColumnNum());
}
public class LikeEval extends BinaryEval {
@Expose private boolean not;
@Expose private Column column;
@Expose private String pattern;
private static final DataType[] RES_TYPE = SchemaUtil.newNoNameSchema(DataType.BOOLEAN);
// temporal variables
private Integer fieldId = null;
private Pattern compiled;
private BoolDatum result;
public LikeEval(boolean not, FieldEval field, ConstEval pattern) {
super(Type.LIKE, field, pattern);
this.not = not;
this.column = field.getColumnRef();
this.pattern = pattern.getValue().asChars();
}
public void compile(String pattern) {
String regex = pattern.replace("?", ".");
regex = regex.replace("%", ".*");
this.compiled = Pattern.compile(regex, Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
result = DatumFactory.createBool(false);
}
@Override
public DataType[] getValueType() {
return RES_TYPE;
}
@Override
public String getName() {
return "?";
}
@Override
public void eval(EvalContext ctx, Schema schema, Tuple tuple) {
if (fieldId == null) {
fieldId = schema.getColumnId(column.getQualifiedName());
compile(this.pattern);
}
StringDatum str = tuple.getString(fieldId);
if (not) {
result.setValue(!compiled.matcher(str.asChars()).matches());
} else {
result.setValue(compiled.matcher(str.asChars()).matches());
}
}
public Datum terminate(EvalContext ctx) {
return result;
}
@Override
public String toString() {
return this.column + " like '" + pattern + "'";
}
}
