/// <summary>
/// Returns true if there are norms stored for this field. </summary>
/// @deprecated (4.0) use <seealso cref="#getFieldInfos()"/> and check <seealso cref="FieldInfo#hasNorms()"/>
/// for the field instead.
public bool HasNorms(string field)
{
EnsureOpen();
// note: using normValues(field) != null would potentially cause i/o
FieldInfo fi = FieldInfos.FieldInfo(field);
return(fi != null && fi.HasNorms());
}
public override NumericDocValues GetNormValues(string field)
{
NumericDocValues dv = base.GetNormValues(field);
FieldInfo fi = FieldInfos.FieldInfo(field);
if (dv != null)
{
Debug.Assert(fi != null);
Debug.Assert(fi.HasNorms());
return(new AssertingNumericDocValues(dv, MaxDoc));
}
else
{
Debug.Assert(fi == null || fi.HasNorms() == false);
return(null);
}
}
public override NumericDocValues GetNormValues(string field)
{
EnsureOpen();
FieldInfo fi = FieldInfos_Renamed.FieldInfo(field);
if (fi == null || !fi.HasNorms())
{
// Field does not exist or does not index norms
return(null);
}
return(Core.GetNormValues(fi));
}
/// <summary>
/// Returns a NumericDocValues for a reader's norms (potentially merging on-the-fly).
/// <p>
/// this is a slow way to access normalization values. Instead, access them per-segment
/// with <seealso cref="AtomicReader#getNormValues(String)"/>
/// </p>
/// </summary>
public static NumericDocValues GetNormValues(IndexReader r, string field)
{
IList <AtomicReaderContext> leaves = r.Leaves;
int size = leaves.Count;
if (size == 0)
{
return(null);
}
else if (size == 1)
{
return(leaves[0].AtomicReader.GetNormValues(field));
}
FieldInfo fi = MultiFields.GetMergedFieldInfos(r).FieldInfo(field);
if (fi == null || fi.HasNorms() == false)
{
return(null);
}
bool anyReal = false;
NumericDocValues[] values = new NumericDocValues[size];
int[] starts = new int[size + 1];
for (int i = 0; i < size; i++)
{
AtomicReaderContext context = leaves[i];
NumericDocValues v = context.AtomicReader.GetNormValues(field);
if (v == null)
{
v = DocValues.EMPTY_NUMERIC;
}
else
{
anyReal = true;
}
values[i] = v;
starts[i] = context.DocBase;
}
starts[size] = r.MaxDoc;
Debug.Assert(anyReal);
return(new NumericDocValuesAnonymousInnerClassHelper(values, starts));
}
