Examples with FieldReader org.apache.drill.exec.vector.complex.reader.FieldReader used on opensource projects

Example 21 with FieldReader

use of org.apache.drill.exec.vector.complex.reader.FieldReader in project drill by axbaretto.

the class RepeatedMapReaderImpl method reader.

@Override
public FieldReader reader(String name) {
    FieldReader reader = fields.get(name);
    if (reader == null) {
        ValueVector child = vector.getChild(name);
        if (child == null) {
            reader = NullReader.INSTANCE;
        } else {
            reader = child.getReader();
        }
        fields.put(name, reader);
        reader.setPosition(currentOffset);
    }
    return reader;
}

Example 22 with FieldReader

use of org.apache.drill.exec.vector.complex.reader.FieldReader in project drill by apache.

the class ListVector method copyFrom.

public void copyFrom(int inIndex, int outIndex, ListVector from) {
    final FieldReader in = from.getReader();
    in.setPosition(inIndex);
    final FieldWriter out = getWriter();
    out.setPosition(outIndex);
    ComplexCopier.copy(in, out);
}

Example 23 with FieldReader

use of org.apache.drill.exec.vector.complex.reader.FieldReader in project drill by apache.

the class AbstractRepeatedMapReaderImpl method reset.

@Override
public void reset() {
    super.reset();
    currentOffset = 0;
    maxOffset = 0;
    for (FieldReader reader : fields.values()) {
        reader.reset();
    }
    fields.clear();
}

Example 24 with FieldReader

use of org.apache.drill.exec.vector.complex.reader.FieldReader in project drill by apache.

the class SingleDictReaderImpl method read.

@Override
public void read(Object key, ValueHolder holder) {
    if (isEmpty()) {
        return;
    }
    int index = find(key);
    FieldReader valueReader = reader(DictVector.FIELD_VALUE_NAME);
    valueReader.setPosition(index);
    if (index != NOT_FOUND) {
        valueReader.read(holder);
    }
}

Example 25 with FieldReader

use of org.apache.drill.exec.vector.complex.reader.FieldReader in project drill by apache.

the class SingleMapReaderImpl method reader.

@Override
public FieldReader reader(String name) {
    FieldReader reader = fields.get(name);
    if (reader == null) {
        ValueVector child = vector.getChild(name);
        if (child == null) {
            reader = NullReader.INSTANCE;
        } else {
            reader = child.getReader();
        }
        fields.put(name, reader);
        reader.setPosition(idx());
    }
    return reader;
}