[37] | 1 | function jv = toJava(v,collection)
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| 2 | %toJava Convert to Java representation.
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| 3 | % toJava(v) returns a Java object representing the matlab value v.
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| 4 | % toJava(v,1) requires the result to be a collection, not a simple object
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| 5 | % such as java.lang.Double.
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| 6 | %
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| 7 | % Conversions:
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| 8 | % scalar -> java.lang.Double
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| 9 | % numeric array -> javaArray of Double
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| 10 | % character array -> java.lang.String or array of same
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| 11 | % empty array -> java.util.Vector
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| 12 | % cell array -> javaArray of Objects
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| 13 | % empty cell array -> java.util.BitSet
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| 14 | % structure -> java.util.HashTable
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| 15 | % class -> struct with '_class' property
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| 16 | %
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| 17 | % See also fromJava.
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| 18 |
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| 19 | % Written by Tom Minka
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| 20 | % (c) Microsoft Corporation. All rights reserved.
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| 21 |
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| 22 | if nargin < 2
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| 23 | collection = 0;
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| 24 | end
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| 25 | % in case v already is a Java object
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| 26 | jv = v;
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| 27 | if isnumeric(v)
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| 28 | if isempty(v)
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| 29 | jv = java.util.Vector;
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| 30 | elseif length(v) == 1
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| 31 | if collection
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| 32 | jv = javaArray('java.lang.Double',1);
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| 33 | jv(1) = java.lang.Double(v);
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| 34 | else
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| 35 | jv = java.lang.Double(v);
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| 36 | end
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| 37 | else
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| 38 | sz = size(v);
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| 39 | jv = javaArray('java.lang.Double',sz);
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| 40 | v = v(:);
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| 41 | for i = 1:prod(sz)
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| 42 | index = substruct('()',num2cell(ind2subv(sz,i)));
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| 43 | subsasgn(jv,index,toJava(v(i)));
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| 44 | end
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| 45 | end
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| 46 | return
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| 47 | end
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| 48 | if ischar(v)
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| 49 | n = rows(v);
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| 50 | if n == 1 & ~collection
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| 51 | jv = java.lang.String(v);
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| 52 | else
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| 53 | jv = javaArray('java.lang.String',n);
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| 54 | for i = 1:n
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| 55 | jv(i) = java.lang.String(deblank(v(i,:)));
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| 56 | end
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| 57 | end
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| 58 | end
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| 59 | if iscell(v)
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| 60 | if isempty(v)
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| 61 | jv = java.util.BitSet;
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| 62 | else
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| 63 | sz = size(v);
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| 64 | jv = javaArray('java.lang.Object',sz);
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| 65 | v = v(:);
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| 66 | for i = 1:prod(sz)
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| 67 | index = substruct('()',num2cell(ind2subv(sz,i)));
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| 68 | subsasgn(jv,index,toJava(v{i}));
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| 69 | end
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| 70 | end
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| 71 | return
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| 72 | end
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| 73 | if isobject(v) | isstruct(v)
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| 74 | jv = java.util.Hashtable;
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| 75 | if isobject(v)
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| 76 | jv.put('_class',class(v));
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| 77 | v = struct(v);
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| 78 | end
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| 79 | % record the order of the fieldnames
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| 80 | fields = java.util.Vector;
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| 81 | for f = fieldnames(v)'
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| 82 | fields.addElement(char(f));
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| 83 | jv.put(char(f),toJava(getfield(v,char(f))));
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| 84 | end
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| 85 | jv.put('_fields',fields);
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| 86 | return
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| 87 | end
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