//-------------------------------------------------------------------------------
//
//-------------------------------------------------------------------------------
/// <summary>
/// Constructs a query to retrieve documents that fully contain the input envelope.
/// </summary>
/// <param name="bbox"></param>
/// <returns>The spatial query</returns>
protected Query MakeContains(Rectangle bbox)
{
// general case
// docMinX <= queryExtent.GetMinX() AND docMinY <= queryExtent.GetMinY() AND docMaxX >= queryExtent.GetMaxX() AND docMaxY >= queryExtent.GetMaxY()
// Y conditions
// docMinY <= queryExtent.GetMinY() AND docMaxY >= queryExtent.GetMaxY()
Query qMinY = NumericRangeQueryHelper.NewDoubleRange(field_minY, precisionStep, null, bbox.GetMinY(), false, true);
Query qMaxY = NumericRangeQueryHelper.NewDoubleRange(field_maxY, precisionStep, bbox.GetMaxY(), null, true, false);
Query yConditions = this.MakeQuery(new Query[] { qMinY, qMaxY }, BooleanClause.Occur.MUST);
// X conditions
Query xConditions = null;
// queries that do not cross the date line
if (!bbox.GetCrossesDateLine())
{
// X Conditions for documents that do not cross the date line,
// documents that contain the min X and max X of the query envelope,
// docMinX <= queryExtent.GetMinX() AND docMaxX >= queryExtent.GetMaxX()
Query qMinX = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, null, bbox.GetMinX(), false, true);
Query qMaxX = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, bbox.GetMaxX(), null, true, false);
Query qMinMax = this.MakeQuery(new Query[] { qMinX, qMaxX }, BooleanClause.Occur.MUST);
Query qNonXDL = this.MakeXDL(false, qMinMax);
// X Conditions for documents that cross the date line,
// the left portion of the document contains the min X of the query
// OR the right portion of the document contains the max X of the query,
// docMinXLeft <= queryExtent.GetMinX() OR docMaxXRight >= queryExtent.GetMaxX()
Query qXDLLeft = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, null, bbox.GetMinX(), false, true);
Query qXDLRight = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, bbox.GetMaxX(), null, true, false);
Query qXDLLeftRight = this.MakeQuery(new Query[] { qXDLLeft, qXDLRight }, BooleanClause.Occur.SHOULD);
Query qXDL = this.MakeXDL(true, qXDLLeftRight);
// apply the non-XDL and XDL conditions
xConditions = this.MakeQuery(new Query[] { qNonXDL, qXDL }, BooleanClause.Occur.SHOULD);
// queries that cross the date line
}
else
{
// No need to search for documents that do not cross the date line
// X Conditions for documents that cross the date line,
// the left portion of the document contains the min X of the query
// AND the right portion of the document contains the max X of the query,
// docMinXLeft <= queryExtent.GetMinX() AND docMaxXRight >= queryExtent.GetMaxX()
Query qXDLLeft = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, null, bbox.GetMinX(), false, true);
Query qXDLRight = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, bbox.GetMaxX(), null, true, false);
Query qXDLLeftRight = this.MakeQuery(new Query[] { qXDLLeft, qXDLRight }, BooleanClause.Occur.MUST);
xConditions = this.MakeXDL(true, qXDLLeftRight);
}
// both X and Y conditions must occur
return(this.MakeQuery(new Query[] { xConditions, yConditions }, BooleanClause.Occur.MUST));
}
private NumericRangeQuery RangeQuery(String fieldName, double?min, double?max)
{
return(NumericRangeQueryHelper.NewDoubleRange(
fieldName,
precisionStep,
min,
max,
true,
true)); //inclusive
}
/*
* Constructs a query to retrieve documents that equal the input envelope.
*
* @return the spatial query
*/
public Query MakeEquals(Rectangle bbox)
{
// docMinX = queryExtent.GetMinX() AND docMinY = queryExtent.GetMinY() AND docMaxX = queryExtent.GetMaxX() AND docMaxY = queryExtent.GetMaxY()
Query qMinX = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, bbox.GetMinX(), bbox.GetMinX(), true, true);
Query qMinY = NumericRangeQueryHelper.NewDoubleRange(field_minY, precisionStep, bbox.GetMinY(), bbox.GetMinY(), true, true);
Query qMaxX = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, bbox.GetMaxX(), bbox.GetMaxX(), true, true);
Query qMaxY = NumericRangeQueryHelper.NewDoubleRange(field_maxY, precisionStep, bbox.GetMaxY(), bbox.GetMaxY(), true, true);
var bq = new BooleanQuery();
bq.Add(qMinX, BooleanClause.Occur.MUST);
bq.Add(qMinY, BooleanClause.Occur.MUST);
bq.Add(qMaxX, BooleanClause.Occur.MUST);
bq.Add(qMaxY, BooleanClause.Occur.MUST);
return(bq);
}
/*
* Constructs a query to retrieve documents are fully within the input envelope.
*
* @return the spatial query
*/
Query MakeWithin(Rectangle bbox)
{
// general case
// docMinX >= queryExtent.GetMinX() AND docMinY >= queryExtent.GetMinY() AND docMaxX <= queryExtent.GetMaxX() AND docMaxY <= queryExtent.GetMaxY()
// Y conditions
// docMinY >= queryExtent.GetMinY() AND docMaxY <= queryExtent.GetMaxY()
Query qMinY = NumericRangeQueryHelper.NewDoubleRange(field_minY, precisionStep, bbox.GetMinY(), null, true, false);
Query qMaxY = NumericRangeQueryHelper.NewDoubleRange(field_maxY, precisionStep, null, bbox.GetMaxY(), false, true);
Query yConditions = this.MakeQuery(new Query[] { qMinY, qMaxY }, BooleanClause.Occur.MUST);
// X conditions
Query xConditions = null;
// X Conditions for documents that cross the date line,
// the left portion of the document must be within the left portion of the query,
// AND the right portion of the document must be within the right portion of the query
// docMinXLeft >= queryExtent.GetMinX() AND docMaxXLeft <= 180.0
// AND docMinXRight >= -180.0 AND docMaxXRight <= queryExtent.GetMaxX()
Query qXDLLeft = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, bbox.GetMinX(), null, true, false);
Query qXDLRight = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, null, bbox.GetMaxX(), false, true);
Query qXDLLeftRight = this.MakeQuery(new Query[] { qXDLLeft, qXDLRight }, BooleanClause.Occur.MUST);
Query qXDL = this.MakeXDL(true, qXDLLeftRight);
// queries that do not cross the date line
if (!bbox.GetCrossesDateLine())
{
// X Conditions for documents that do not cross the date line,
// docMinX >= queryExtent.GetMinX() AND docMaxX <= queryExtent.GetMaxX()
Query qMinX = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, bbox.GetMinX(), null, true, false);
Query qMaxX = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, null, bbox.GetMaxX(), false, true);
Query qMinMax = this.MakeQuery(new Query[] { qMinX, qMaxX }, BooleanClause.Occur.MUST);
Query qNonXDL = this.MakeXDL(false, qMinMax);
// apply the non-XDL or XDL X conditions
if ((bbox.GetMinX() <= -180.0) && bbox.GetMaxX() >= 180.0)
{
xConditions = this.MakeQuery(new Query[] { qNonXDL, qXDL }, BooleanClause.Occur.SHOULD);
}
else
{
xConditions = qNonXDL;
}
// queries that cross the date line
}
else
{
// X Conditions for documents that do not cross the date line
// the document should be within the left portion of the query
// docMinX >= queryExtent.GetMinX() AND docMaxX <= 180.0
Query qMinXLeft = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, bbox.GetMinX(), null, true, false);
Query qMaxXLeft = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, null, 180.0, false, true);
Query qLeft = this.MakeQuery(new Query[] { qMinXLeft, qMaxXLeft }, BooleanClause.Occur.MUST);
// the document should be within the right portion of the query
// docMinX >= -180.0 AND docMaxX <= queryExtent.GetMaxX()
Query qMinXRight = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, -180.0, null, true, false);
Query qMaxXRight = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, null, bbox.GetMaxX(), false, true);
Query qRight = this.MakeQuery(new Query[] { qMinXRight, qMaxXRight }, BooleanClause.Occur.MUST);
// either left or right conditions should occur,
// apply the left and right conditions to documents that do not cross the date line
Query qLeftRight = this.MakeQuery(new Query[] { qLeft, qRight }, BooleanClause.Occur.SHOULD);
Query qNonXDL = this.MakeXDL(false, qLeftRight);
// apply the non-XDL and XDL conditions
xConditions = this.MakeQuery(new Query[] { qNonXDL, qXDL }, BooleanClause.Occur.SHOULD);
}
// both X and Y conditions must occur
return(this.MakeQuery(new Query[] { xConditions, yConditions }, BooleanClause.Occur.MUST));
}
/// <summary>
/// Constructs a query to retrieve documents that are disjoint to the input envelope.
/// </summary>
/// <param name="bbox"></param>
/// <returns>the spatial query</returns>
Query MakeDisjoint(Rectangle bbox)
{
// general case
// docMinX > queryExtent.GetMaxX() OR docMaxX < queryExtent.GetMinX() OR docMinY > queryExtent.GetMaxY() OR docMaxY < queryExtent.GetMinY()
// Y conditions
// docMinY > queryExtent.GetMaxY() OR docMaxY < queryExtent.GetMinY()
Query qMinY = NumericRangeQueryHelper.NewDoubleRange(field_minY, precisionStep, bbox.GetMaxY(), null, false, false);
Query qMaxY = NumericRangeQueryHelper.NewDoubleRange(field_maxY, precisionStep, null, bbox.GetMinY(), false, false);
Query yConditions = this.MakeQuery(new Query[] { qMinY, qMaxY }, BooleanClause.Occur.SHOULD);
// X conditions
Query xConditions = null;
// queries that do not cross the date line
if (!bbox.GetCrossesDateLine())
{
// X Conditions for documents that do not cross the date line,
// docMinX > queryExtent.GetMaxX() OR docMaxX < queryExtent.GetMinX()
Query qMinX = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, bbox.GetMaxX(), null, false, false);
Query qMaxX = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, null, bbox.GetMinX(), false, false);
Query qMinMax = this.MakeQuery(new Query[] { qMinX, qMaxX }, BooleanClause.Occur.SHOULD);
Query qNonXDL = this.MakeXDL(false, qMinMax);
// X Conditions for documents that cross the date line,
// both the left and right portions of the document must be disjoint to the query
// (docMinXLeft > queryExtent.GetMaxX() OR docMaxXLeft < queryExtent.GetMinX()) AND
// (docMinXRight > queryExtent.GetMaxX() OR docMaxXRight < queryExtent.GetMinX())
// where: docMaxXLeft = 180.0, docMinXRight = -180.0
// (docMaxXLeft < queryExtent.GetMinX()) equates to (180.0 < queryExtent.GetMinX()) and is ignored
// (docMinXRight > queryExtent.GetMaxX()) equates to (-180.0 > queryExtent.GetMaxX()) and is ignored
Query qMinXLeft = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, bbox.GetMaxX(), null, false, false);
Query qMaxXRight = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, null, bbox.GetMinX(), false, false);
Query qLeftRight = this.MakeQuery(new Query[] { qMinXLeft, qMaxXRight }, BooleanClause.Occur.MUST);
Query qXDL = this.MakeXDL(true, qLeftRight);
// apply the non-XDL and XDL conditions
xConditions = this.MakeQuery(new Query[] { qNonXDL, qXDL }, BooleanClause.Occur.SHOULD);
// queries that cross the date line
}
else
{
// X Conditions for documents that do not cross the date line,
// the document must be disjoint to both the left and right query portions
// (docMinX > queryExtent.GetMaxX()Left OR docMaxX < queryExtent.GetMinX()) AND (docMinX > queryExtent.GetMaxX() OR docMaxX < queryExtent.GetMinX()Left)
// where: queryExtent.GetMaxX()Left = 180.0, queryExtent.GetMinX()Left = -180.0
Query qMinXLeft = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, 180.0, null, false, false);
Query qMaxXLeft = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, null, bbox.GetMinX(), false, false);
Query qMinXRight = NumericRangeQueryHelper.NewDoubleRange(field_minX, precisionStep, bbox.GetMaxX(), null, false, false);
Query qMaxXRight = NumericRangeQueryHelper.NewDoubleRange(field_maxX, precisionStep, null, -180.0, false, false);
Query qLeft = this.MakeQuery(new Query[] { qMinXLeft, qMaxXLeft }, BooleanClause.Occur.SHOULD);
Query qRight = this.MakeQuery(new Query[] { qMinXRight, qMaxXRight }, BooleanClause.Occur.SHOULD);
Query qLeftRight = this.MakeQuery(new Query[] { qLeft, qRight }, BooleanClause.Occur.MUST);
// No need to search for documents that do not cross the date line
xConditions = this.MakeXDL(false, qLeftRight);
}
// either X or Y conditions should occur
return(this.MakeQuery(new Query[] { xConditions, yConditions }, BooleanClause.Occur.SHOULD));
}
