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When using a cursor, you need to declare at least two variables. One is the variable that will be used to indicate that the cursor has reached the end of the record set. In Listing 11-1, we used the finished variable for this purpose: DECLARE finished INTEGER DEFAULT 0;

Figure 12 3. The resulting ellipse Some additional options are available for the dashed border, too. The StrokeDashCap can be used to control the transition between the dashes and the empty space between. The default value for this property is Flat, but it can also be set to one of Square, Round, or Triangle. This difference can be seen in Figure 12 4, which uses the same ellipse as in Figure 12 3, but with each of the new dash cap values. Note that all these except for Flat will eat into the space allocated for the gaps, so if you want to use a dash cap while also retaining equal sizes of the dashes and gaps, you will need to manipulate the StrokeDashArray to accommodate the dash caps.

public boolean rotate(int rotType, int dir) { int degAngle; // angle in degrees double angle; // angle in radians // test if the rotation is possible if (dir == POS) { degAngle = ROTATE_DEG; if (!withinRange(rotType, degAngle)) return false; // do nothing angle = ROTATE_AMT; }

The finished variable was initialized to 0. During the loop over the record, this variable is checked with an IF statement to determine if the last record has been reached. We ll look at the loop shortly, when we discuss the HANDLER statement. Beyond the variable for exiting the loop, you also need to declare a variable for each field that you will FETCH from the cursor. In this example, we re getting only one field from each row, so we declare only one variable to store the field value being pulled from the row of data: DECLARE city_name VARCHAR(50) DEFAULT ""; When you re iterating over the records, the FETCH statement gets the field value from the cursor and assigns the value to the variable. We ll cover fetching data from the records in the upcoming section about the FETCH statement. Each time the loop iterates, city_name will be set to the value of name for the current row and be available for use in whatever logic you re performing in the loop. In this case, we re building a string. We also have declared a list variable that is created to store the joined city names. This variable will eventually be used for the return to the client.

Figure 12 4. Dashed ellipses with Square, Round, and Triangle stroke dash caps It is also possible to rotate the dashes around the ellipse by applying a StrokeDashOffset. This is measured in the same units as the StrokeDashArray is measured in, so if the total length of the stroke dashes is 6 units, the offset will produce identical results with a value of 0 or 6, but other values in between will change the positioning of the dashes. The StrokeDashOffset could be animated within a game to provide a simple implementation of a spinning outline box or disc useful for highlighting selected game objects, for example. The Rectangle offers a final pair of properties that might come in very handy: RadiusX and RadiusY. They allow rounded corners to be applied to the rectangle, and the elliptical rounding area will have its width and height defined by these two properties. Figure 12 5 shows a rectangle using a value of 15 for both of the corner radius properties.

else { // dir == NEG degAngle = -ROTATE_DEG; if (!withinRange(rotType, degAngle)) return false; // do nothing angle = -ROTATE_AMT; } // carry out the rotation; store the new joint angle if (rotType == X_JOINT) { // left/right movement doRotate(jointXTG, X_JOINT, angle); xCurrAngle += degAngle; } else if (rotType == Y_JOINT) { // up/down movement doRotate(jointYTG, Y_JOINT, angle); yCurrAngle += degAngle; } else if (rotType == Z_JOINT) { // spinning around forearm doRotate(jointZTG, Z_JOINT, angle); zCurrAngle += degAngle; } else if (rotType == FING_JOINT) { // up/down of fingers doRotate(topFingTG, Y_JOINT, angle); //up (or down) of top finger doRotate(botFingTG, Y_JOINT, -angle);//down (up) of bottom finger fingCurrAngle += degAngle; } else { System.out.println("Did not recognise rotation type: "+ rotType); return false; } return true; // end of rotate()