//key = val,.....
private bool econdition(Dictionary<string,object>dic,wordtype[] logics)
{
int i=0;
string name;
object val=null;
name = strArray[count];
count++;
if (strArray[count] == "=")
{
count++;
val = valtype();
logics[i] = wordtype.eql;
i++;
}
if (strArray[count] == ">")
{
count++;
if (strArray[count] == "=")
{
count++;
val = valtype();
logics[0] = wordtype.aeql;
i++;
}
else
{
val = valtype();
logics[0] = wordtype.above;
i++;
}
}
if (strArray[count] == "<")
{
count++;
if (strArray[count] == "=")
{
count++;
val = valtype();
logics[0] = wordtype.beql;
i++;
}
else
{
val = valtype();
logics[0] = wordtype.below;
i++;
}
}
dic[name] = val;
while (strArray[count] == ",")
{
count++;
name = strArray[count];
count++;
if (strArray[count] == "=")
{
count++;
val = valtype();
logics[i] = wordtype.eql;
i++;
}
if (strArray[count] == ">")
{
count++;
if (strArray[count] == "=")
{
count++;
val = valtype();
logics[0] = wordtype.aeql;
i++;
}
else
{
val = valtype();
logics[0] = wordtype.above;
i++;
}
}
if (strArray[count] == "<")
{
count++;
if (strArray[count] == "=")
{
count++;
val = valtype();
logics[0] = wordtype.beql;
i++;
}
else
{
val = valtype();
logics[0] = wordtype.below;
i++;
}
}
dic[name] = val;
}
if (strArray[count] == ")")
return true;
return false;
}
//根据v1，v2，edge的属性返回边
private bool getedges(IEnumerable<IEdge> es, IVertex v1, IVertex v2, Dictionary<string,object>ckey,wordtype[] logic)
{
Func<IEdge, bool> aa=null;
int i=0;
foreach (var k in ckey.Keys)
{
switch (logic[i])
{
case wordtype.eql: aa = a => Convert.ToDouble(a[k]) == Convert.ToDouble(ckey[k]);
break;
case wordtype.above: aa = a => Convert.ToDouble(a[k]) > Convert.ToDouble(ckey[k]);
break;
case wordtype.below: aa = a => Convert.ToDouble(a[k]) < Convert.ToDouble(ckey[k]);
break;
case wordtype.beql: aa = a => Convert.ToDouble(a[k]) <= Convert.ToDouble(ckey[k]);
break;
case wordtype.aeql: aa = a => Convert.ToDouble(a[k]) >= Convert.ToDouble(ckey[k]);
break;
}
i++;
es = gHelper.SelectEdges(k, ckey[k], v1, v2, null, es, aa);
}
return true;
}
//select edge语句
private bool selectedge()
{
string v1type="",v2type="";
object v1typeval=null,v2typeval=null;
Dictionary<string, object> v1 = new Dictionary<string, object>();
Dictionary<string, object> v2 = new Dictionary<string, object>();
Dictionary<string, object> con = new Dictionary<string, object>();
wordtype[] lo=new wordtype[5];
count++;
_returns = new HashSet<Edge>();
ReturnsType = _ReturnsType.Edge;
if (strArray[count] == "(")
{
count++;
if (verter_type_keyval(ref v1type, ref v1typeval, v1))
{
if (strArray[count] == ",")
{
count++;
if (verter_type_keyval(ref v2type, ref v2typeval, v2))
{
IEnumerable<IVertex> v1s = new HashSet<IVertex>();
IEnumerable<IVertex> v2s = new HashSet<IVertex>();
if ((v1s=getvertexs(v1s, v1type, v1typeval, v1))!=null && (v2s=getvertexs(v2s, v2type, v2typeval, v2))!=null)
{
if (strArray[count] == ",")
{
count++;
if(econdition(con,lo))
{
foreach (var vsrc in v1s)
{
foreach (var vdest in v2s)
{
IEnumerable<IEdge> es = gHelper.SelectParallelEdges(vsrc, vdest);
getedges(es, vsrc, vdest, con, lo);
_returns = _returns.Concat(es);
}
}
}
else
return false;
}
else
{
foreach (var vsrc in v1s)
{
foreach (var vdest in v2s)
{
IEnumerable<IEdge> es = gHelper.SelectEdges(null, null, vsrc, vdest);
_returns = _returns.Concat(es);
}
}
}
if (strArray[count] == ")")
{
count++;
return true;
}
else
return false;
}
else
return false;
}
else
return false;
}
else
return false;
}
else
return false;
}
else
return false;
}