FileDocCategorySizeDatePackage
ByteValueTag.javaAPI DocExample2901Thu Jun 28 16:14:16 BST 2001com.ora.jsp.tags.sql.value

ByteValueTag

public class ByteValueTag extends ValueTag
This class is a custom action intended to be used in the body of a sqlQuery or an sqlUpdate action element. It adds the specified value to its parent's value list.
author
Hans Bergsten, Gefion software
version
1.0.1

Fields Summary
private byte
value
Constructors Summary
Methods Summary
public intdoEndTag()
Gets the value, specified by the value attribute, the stringValue attribute, the param attribute, or the name and property attributes, and adds it to the parent's value list.

        if (stringValue != null) {
            value = toByte(stringValue);
        }
        else if (param != null) {
            String paramValue = getParameter(param);
            value = toByte(paramValue);
        }
        else if (name != null) {
            value = getByte(name, property);
        }
        ValueTagParent parent = 
            (ValueTagParent) findAncestorWithClass(this, ValueTagParent.class);
        if (parent == null) {
            throw new JspException("The sqlByteValue action is not " +
                "enclosed by a supported action type");
        }
        parent.addValue(new ByteValue(value));
        return EVAL_PAGE;
    
private bytegetByte(java.lang.String beanName, java.lang.String propertyName)

        byte byteValue;
        Object bean = getBean(beanName);
        Method readMethod = getPropertyReadMethod(bean, propertyName);
        Class returnType = readMethod.getReturnType();
        Object value = getValue(bean, readMethod, propertyName);
        
        if (Byte.TYPE.isAssignableFrom(returnType)) {
            byteValue = ((Byte) value).byteValue();
        }
        else if (String.class.isAssignableFrom(returnType)) {
            byteValue = toByte((String) value);
        }
        else {
            throw new JspException("Read method for the " + propertyName +
                " property in the bean named " + beanName + " is not of type " +
                " String or byte");
        }
        return byteValue;
    
public voidsetValue(byte value)
Sets the value property.

        this.value = value;
    
private bytetoByte(java.lang.String stringValue)

        if (stringValue.length() == 0) {
            throw new JspException("An empty string can not be converted to " +
                " a byte.");
        }
        byte[] bytes = stringValue.getBytes();
        return bytes[0];