鍦ㄥ弬鑰冧簡GEF鐨?/SPAN>flow example涔嬪悗錛屽鍏朵唬鐮佷綔浜嗛儴鍒嗛噸鏋勶紝鍐欎簡榪欑墖鏂囩珷錛屽笇鏈涘閬囧埌鍚屾牱闂鐨勫悓蹇楄兘澶熸湁涓瀹氱殑甯姪銆?/SPAN>
棣栧厛寮曞叆涓涓帴鍙ｏ細
public interface GraphBuilder {
public void contributeNodesToGraph(DirectedGraph graph, Map map);
public void contributeEdgesToGraph(DirectedGraph graph, Map map);
public void applyGraphResults(DirectedGraph graph, Map map);
}
榪欎釜鎺ュ彛涓畾涔変簡鍑犱釜鏂規(guī)硶錛屽叾鍚箟浠庡叾鏂規(guī)硶鍚嶄腑鍙互鐚滃嚭錛?/SPAN>
contributeNodesToGraph錛氬皢褰撳墠瀵硅薄浣滀負鑺傜偣錛?/SPAN>Node錛夋坊鍔犲埌DirectedGraph涓?/SPAN>
contributeEdgesToGraph錛氬皢褰撳墠瀵硅薄鎵瀵瑰簲鐨勮繛綰夸綔涓鴻竟錛?/SPAN>Edge錛夋坊鍔犲埌DirectedGraph涓?/SPAN>
applyGraphResults錛氬皢鍥句腑鐢熸垚鐨勫竷灞淇℃伅鍙栧嚭錛屽鏈璞¤繘琛岄噸鏂板竷灞銆?/SPAN>
鎺ュ彛涓殑graph鍙傛暟灝辨槸淇濆瓨鐨勫浘鐨勪俊鎭紝map鍙傛暟緇存寔涓涓璞″埌鑺傜偣/杈圭殑鏄犲皠錛屼嬌寰楁瘡涓璞¤兘澶熸柟渚跨殑鎵懼埌鍏跺搴旂殑鍥句腑鐨勮妭鐐規(guī)垨鑰呰竟銆傝繖涓帴鍙ｇ殑浣跨敤錛屽湪鍚庨潰浼氭湁娑夊強銆備笅闈㈠厛鐪嬬湅鏄劇ず鍥劇殑瀹瑰櫒鏄浣曟瀯寤虹殑銆?/SPAN>
鍥劇殑瀹瑰櫒瀹氫箟涓?/SPAN>GraphDiagramEditPart錛岃繖涓?/SPAN>EditPart瀵瑰簲浜庤鏄劇ず鐨勬湁鍚戝浘鐨勫鍣ㄣ傚畠瀹炵幇浜?/SPAN>GraphBuider鎺ュ彛錛岃繖涔熸槸鎴戜滑涓昏闇瑕佸叧娉ㄧ殑鎺ュ彛錛?/SPAN>
public class GraphDiagramEditPart extends AbstractGraphicalEditPart implements
GraphBuilder.
contributeNodesToGraph鏂規(guī)硶灝嗚嚜韜綔涓鴻妭鐐規(guī)坊鍔犲埌鍥句腑錛屼絾鏄洜涓?/SPAN>GraphDiagramEditPart瀵瑰簲鐨勬槸瀹瑰櫒錛屽洜姝ゅ畠涓嶉渶瑕佸悜鍥句腑娣誨姞淇℃伅錛屽彧鏄皟鐢ㄥ叾瀛?/SPAN>EditPart錛屽皢鍏舵坊鍔犲埌鍥句腑銆?/SPAN>
public void contributeNodesToGraph(DirectedGraph graph, Map map) {
for (int i = 0; i < getChildren().size(); i++) {
NodeEditPart activity = (NodeEditPart)getChildren().get(i);
activity.contributeNodesToGraph(graph, map);
}
}
contributeEdgesToGraph鏂規(guī)硶灝嗚繖涓?/SPAN>EditPart鐨勬墍鏈夊瓙EditPart鍙栧嚭錛岃皟鐢ㄥ叾contributeEdgesToGraph鏂規(guī)硶錛岄氳繃榪欎釜鏂規(guī)硶錛屽氨鍙互灝嗘墍鏈夌殑杈規(guī)坊鍔犲埌鍥句腑浜嗭細
public void contributeEdgesToGraph(DirectedGraph graph, Map map) {
for (int i = 0; i < getChildren().size(); i++) {
NodeEditPart child = (NodeEditPart)children.get(i);
child.contributeEdgesToGraph(graph, map);
}
}
applyGraphResults鏂規(guī)硶灝嗘墍鏈夊彇鍑烘墍鏈夌殑瀛?/SPAN>EditPart錛屽茍璋冪敤鍏?/SPAN>applyGraphResults錛屼嬌寰楀浘涓墍鐢熸垚鐨勫竷灞淇℃伅鑳藉琚簲鐢ㄥ埌鏄劇ず涓娿?/SPAN>
public void applyGraphResults(DirectedGraph graph, Map map) {
applyChildrenResults(graph, map);
}
protected void applyChildrenResults(DirectedGraph graph, Map map) {
for (int i = 0; i < getChildren().size(); i++) {
GraphBuilder part = (GraphBuilder) getChildren().get(i);
part.applyGraphResults(graph, map);
}
}
涓嬮潰瑕佷粙緇嶇殑鏄?/SPAN>NodeEditPart錛屽畠浣滃浘涓墍鏈夎妭鐐規(guī)墍瀵瑰簲鐨?/SPAN>EditPart鐨勬娊璞＄埗綾伙紝涔熷疄鐜頒簡GraphBuilder鎺ュ彛銆傛瘡涓涓鍋氫負鑺傜偣娣誨姞鍒板浘涓殑EditPart錛屽簲璇ョ戶鎵胯繖涓被銆?/SPAN>
public abstract class NodeEditPart extends AbstractGraphicalEditPart implements
GraphBuilder{
public void contributeNodesToGraph(DirectedGraph graph,
Map map) {
Node n = new Node(this);
n.outgoingOffset = 7;
n.incomingOffset = 7;
n.width = getFigure().getPreferredSize().width;
n.height = getFigure().getPreferredSize().height;
n.setPadding(new Insets(10,8,10,12));
map.put(this, n);
graph.nodes.add(n);
}
public void contributeEdgesToGraph(DirectedGraph graph, Map map) {
List outgoing = getSourceConnections();
for (int i = 0; i < outgoing.size(); i++) {
EdgeEditPart part = (EdgeEditPart)getSourceConnections().get(i);
part.contributeEdgesToGraph(graph, map);
}
}
public void applyGraphResults(DirectedGraph graph, Map map) {
Node n = (Node)map.get(this);
getFigure().setBounds(new Rectangle(n.x, n.y, n.width, n.height));
for (int i = 0; i < getSourceConnections().size(); i++) {
EdgeEditPart trans = (EdgeEditPart) getSourceConnections().get(i);
trans.applyGraphResults(graph, map);
}
}
}
鍐嶅氨鏄竟鎵瀵瑰簲EditPart鐨勬娊璞＄被EdgeEditPart銆傛瘡涓涓浣滀負杈規(guī)坊鍔犲埌鍥句腑鐨?/SPAN>EditPart錛岄渶瑕佺戶鎵胯繖涓被銆傚湪涓婇潰NodeEditPart涓鍏舵墍瀵瑰簲鐨?/SPAN>Figure鍏跺疄騫舵病鏈変粈涔堣姹傦紝浣嗘槸瀵?/SPAN>EdgeEditPart鎵瀵瑰簲鐨?/SPAN>Figure錛岃姹傚叾Figure蹇呴』鐢變竴涓?/SPAN>BendpointConnectionRouter錛屼綔涓哄叾ConnectionRouter錛?/SPAN>setConnectionRouter(new BendpointConnectionRouter())銆傝繖鏍峰浘鐨勮竟鐨勮礬寰勪俊鎭墠鑳藉琚樉紺哄嚭鏉ャ?/SPAN>
public abstract class EdgeEditPart extends AbstractConnectionEditPart implements
GraphBuilder {
public void contributeEdgesToGraph(DirectedGraph graph, Map map) {
Node source = (Node)map.get(getSource());
Node target = (Node)map.get(getTarget());
Edge e = new Edge(this, source, target);
e.weight = 2;
graph.edges.add(e);
map.put(this, e);
}
public void applyGraphResults(DirectedGraph graph, Map map) {
Edge e = (Edge)map.get(this);
NodeList nodes = e.vNodes;
PolylineConnection conn = (PolylineConnection)getConnectionFigure();
conn.setTargetDecoration(new PolygonDecoration());
if (nodes != null) {
List bends = new ArrayList();
for (int i = 0; i < nodes.size(); i++) {
Node vn = nodes.getNode(i);
int x = vn.x;
int y = vn.y;
if (e.isFeedback) {
bends.add(new AbsoluteBendpoint(x, y + vn.height));
bends.add(new AbsoluteBendpoint(x, y));
} else {
bends.add(new AbsoluteBendpoint(x, y));
bends.add(new AbsoluteBendpoint(x, y + vn.height));
}
}
conn.setRoutingConstraint(bends);
} else {
conn.setRoutingConstraint(Collections.EMPTY_LIST);
}
}
}
鏈鍚庣殑灝辨槸涓涓?/SPAN>LayoutManager鏉ュ垵濮嬪寲鍥劇殑鍒涘緩錛屼互鍙婂鍥劇殑淇℃伅榪涜瑙ｉ噴浜嗭紝鐢熸垚鏈緇堝竷灞浜嗐傝繖涓?/SPAN>GraphLayoutManager浣滀負GraphDiagramEditPart鎵瀵瑰簲鐨?/SPAN>GraphDiagram鐨?/SPAN>LayoutManager錛屾潵鏄劇ず鍥劇殑鍐呭銆?/SPAN>
public class GraphLayoutManager extends AbstractLayout {
private GraphBuilder diagram;
GraphLayoutManager(GraphBuilder diagram) {
this.diagram = diagram;
}
protected Dimension calculatePreferredSize(IFigure container, int wHint,
int hHint) {
container.validate();
List children = container.getChildren();
Rectangle result = new Rectangle().setLocation(container
.getClientArea().getLocation());
for (int i = 0; i < children.size(); i++)
result.union(((IFigure) children.get(i)).getBounds());
result.resize(container.getInsets().getWidth(), container.getInsets()
.getHeight());
return result.getSize();
}
public void layout(IFigure container) {
DirectedGraph graph = new DirectedGraph();
Map partsToNodes = new HashMap();
diagram.contributeNodesToGraph(graph, partsToNodes);
diagram.contributeEdgesToGraph(graph, partsToNodes);
new DirectedGraphLayout().visit(graph);
diagram.applyGraphResults(graph, partsToNodes);
}
}
鍙互鐪嬪埌鍦?/SPAN>layout鏂規(guī)硶涓紝棣栧厛鐢熸垚浜嗕竴涓?/SPAN>DirectedGraph錛屽茍璋冪敤浜?/SPAN>contributeNodesToGraph浠ュ強contributeEdgesToGraph鏂規(guī)硶錛屽皢鑺傜偣鍜岃竟鐨勪俊鎭坊鍔犲埌榪欎釜鐢熸垚鐨?/SPAN>DirectedGraphGraph涓紝鐒跺悗浣跨敤甯冨眬綆楁硶DirectedGraphLayout().visit(graph)鏉ヨ綆楃敓鎴愬浘鐨勪俊鎭紙榪欓噷浣跨敤浜?/SPAN>visitor妯″紡錛夋渶鍚庤皟鐢?/SPAN>applyGraphResults灝嗗浘鐨勪俊鎭簲鐢ㄥ埌鍥懼艦鐨勬樉紺轟笂銆?/SPAN>
鑷蟲錛屾墍鏈夋鏋剁殑宸ヤ綔鍋氬畬浜嗭紝濡傛灉瑕佸皢妯″瀷浣滀負涓涓湁鍚戝浘鏄劇ず鐨勮瘽錛屽彧闇瑕佸皢妯″瀷鐨勫鍣ㄥ璞″搴斾簬GraphDiagramEditPart錛堝湪EditPartFactory涓繘琛屾槧灝勶級錛屼負姣忎竴涓渶瑕佽〃紺轟負鑺傜偣鐨勫璞★紝瀵瑰簲鍒頒竴涓戶鎵夸簬NodeEditPart鐨?/SPAN>EditPart錛屼負姣忎竴涓渶瑕佽〃紺轟負杈圭殑妯″瀷瀵硅薄錛屽搴斿埌涓涓戶鎵夸簬EdgeEditPart鐨?/SPAN>EditPart銆傝繖鏍鳳紝灝辮兘澶熷皢鍥劇殑甯冨眬綆楁硶錛屽簲鐢ㄥ埌GEF妗嗘灦涓簡銆?/SPAN>
榪欓噷鍐欑殑姣旇緝綆鍗曪紝浣跨敤璧鋒潵涔熶細鏈変竴浜涘叿浣撶殑綰︽潫銆備緥濡傚湪鏈夊悜鍥句腑錛屾槸涓嶈兘澶熸湁瀛ょ珛鐨勮妭鐐圭殑銆傚鏋滀嬌鐢?/SPAN>CompoundDirectedGraph錛屽氨涓嶄細鏈夎繖鏍風(fēng)殑闂錛?/SPAN>CompoundDirectedGraph鍙互鍖呮嫭瀛愬浘錛屽彲浠ユ敮鎸佹洿涓哄鏉傜殑鍥懼艦銆傚湪Flow Example涓嬌鐢ㄧ殑灝辨槸CompoundDirectedGraph銆傚湪鍚庨潰錛屾垜鎴栬浼氬皢榪欎釜妗嗘灦榪涜鏀瑰啓錛屼互浣垮叾鏀寔CompoundDirectedGraph鏉ヨ繘琛屽竷灞綆楁硶銆備笅闈㈢殑鍥炬槸涓涓敓鎴愮殑渚嬪瓙錛屽ぇ瀹跺彲浠ョ湅涓涓嬫晥鏋?
榪欐槸浠嶰WL鏂囦歡涓鍙栧唴瀹逛箣鍚庣敓鎴愮殑涓涓浘鐨勮〃紺恒傚彲浠ョ湅鍒幫紝OWL鐨勮妭鐐歸氳繃鑷姩鍥劇殑鑷姩甯冨眬涔嬪悗錛屽凡緇忔湁浜嗚緝濂界殑瑙嗚鏁堟灉銆傚鏋滄病鏈夎繖鏍風(fēng)殑甯冨眬鐨勮瘽錛屽洜涓哄崟綰殑OWL鏂囦歡涓茍涓嶄細鍖呭惈鑺傜偣鐨勫浘鐨勪俊鎭紝鍥炬樉紺哄嚭鏉ヤ細鍙樺緱闈炲父鐨勪貢錛屾墍鏈夌殑鑺傜偣閮戒細鍫嗗湪涓璧楓?BR>
鍘熸枃鍦板潃:http://www.tkk7.com/eclipshine/archive/2005/07/22/8195.aspx
| 9.22 SDO瀛︿範絎旇 |
|
浠婂ぉ綺楃矖鐪嬩簡涓鐪糞DO錛岀暐鏈夌悊瑙ｃ?/FONT>
SDO鍏ㄧОService Data Objects錛屾槸IBM鎻愬嚭鐨勪竴涓鏋惰鑼冦係DO妗嗘灦鐢變笁閮ㄥ垎緇勬垚錛欴MS錛圖ata Mediator Services錛夛紝Data Graph鍜孌ataObject銆侱MS璐熻矗鐢熸垚Data Graph錛孌ata Graph鍖呭惈涓緋誨垪鍏寵仈鐨凞ata Object銆傚鎴峰拰DataGraph鎵撲氦閬擄紝鑰孌MS濡備綍鐢熸垚Data Graph鍙堝浣曚粠Data Graph鏇存柊鍚庨潰鐨勬暟鎹垯鏃犻渶鍏沖績銆侱ata Graph鏄疍isconnected Mode鐨勬暟鎹鐞嗘柟寮忥紝鍗沖鍏惰繘琛岀殑淇敼鎿嶄綔錛屽皢涓嶄細绔嬪埢浣撶幇錛岄渶瑕佸皢淇敼榪囩殑Data Graph鐢盌MS鏉ユ洿鏂板埌鏁版嵁婧愩侱ata Graph鏄氳繃log change summary鏉ュ疄鐜扮殑銆?/FONT>
鍦⊿pec涓閬擄紝Data Graph琚簭鍒楀寲涓篨ML涔熻兘浠嶺ML涓鍙嶅簭鍒楀寲銆傝繖浣垮緱鍦⊿ervices鍜屽叾Caller涔嬮棿浼犻扗ataGraph闈炲父鐩存帴銆傚悓鏃朵篃鎻愬嚭浜嗙郴緇熷唴閮ㄣ佺郴緇熶箣闂存暟鎹氦浜掔殑涓鑷存柟寮忊斺旈氳繃XML搴忓垪鍖栬繃鐨凞ata Graph銆?/FONT>
Data Object鍙互琚姩鎬佸疄鐜幫紙紼嬪簭閲屽皢鐪嬩笉瑙佸叿浣撶殑Data Object綾伙紝姣斿Employee綾伙紝鍥犳涔熸棤闇瀹氫箟XML Schema錛夛紝涔熷彲浠ヨ闈欐佺敓鎴愶紙渚嬪棰勫厛寤烘ā鍚庝嬌鐢ㄥ伐鍏風(fēng)敓鎴愶紝鐩墠IBM鍩轟簬EMF鐨凴I鍙互浣跨敤EMF鏉ョ敓鎴愶級銆?/FONT>
DMS鍙互鏈夎澶氬疄鐜版柟寮忥紝鍦↖Bm鐨凷DO Specification涓茍娌℃湁浠諱綍鍏充簬DMS瀹炵幇鏂瑰紡鐨勮鑼冦傚疄闄呬笂錛孌MS鍦⊿DO Spec V2.0閲岄潰宸茬粡鏀圭ОDAS錛圖ata Access Services錛夛紝鎴戜滑鍙戠幇榪欏懡鍚嶅拰DAO錛圖ata Access Object錛夋ā寮忎綍鍏剁浉浼箋備笉榪囪繖閲屾槸Service銆傞偅涔堝彲浠ユ兂璞″湪SOA涓紝鎴戜滑鍙互鎻愪緵榪欐牱鐨凞AS鏉ユ彁渚涙暟鎹茍浣滄暟鎹洿鏂般傞毦閬撲笌DAO綾諱技榪欏皢浼氭垚涓轟竴縐峉OA妯″紡錛?/FONT>
鏇撮噸瑕佺殑鏄紝DAS鍙互鍦↗2EE鐨勫悇灞傞兘鑳借浣跨敤銆備綘鍙互浣跨敤JDBC瀹炵幇DAS鐢ㄥ畠鍋氫竴涓寔涔呭寲鏈嶅姟灞傦紝浣犲彲浠ョ敤EJB瀹炵幇DAS騫朵笖鏆撮湶鎴怶eb Service鈥︹︿綘鐢氳嚦鍙互浣跨敤Hibernate銆丣DO榪欐牱鐨勬寔涔呭寲宸ュ叿鏉ュ疄鐜癉AS銆?/FONT>
鎵浠ユ垜浠笉鍙兘娣鋒穯SDO妗嗘灦鍜孒ibernate銆丣DO絳夊伐鍏封斺斿洜涓哄悗鑰呭彧鏄寔涔呭寲宸ュ叿瀛樺湪浜嶦IS涔嬩笂錛涗篃鏃犻渶鎬鐤慡DO鐨勪環(huán)鍊尖斺擲DO紜疄鍙互涓烘暣涓狫2EE搴旂敤灝ゅ叾鏄疭OA鎻愪緵涓涓竴鑷寸殑鏁版嵁澶勭悊鏂瑰紡銆?/FONT>
鏄庡ぉ緇х畫鐮旂┒銆傚笇鏈涜兘娣卞寲銆佺籂姝ｇ幇鍦ㄧ殑鐞嗚В銆?BR> |