propertyexception.java

一个很好的开源项目管理系统源代码

package net.java.workeffort.infrastructure.exception;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.Validate;
import org.apache.commons.lang.builder.ToStringBuilder;

/**
 * Helps in identifying exactly which property created the exception.
 * @author Antony Joseph
 */
public class PropertyException extends RuntimeException implements
        IPropertyException {
    private String propertyName;
    private Object guiltyObj;
    private String collectionName;
    private Integer index;
    private String errorCode = "property.exception";

    public PropertyException() {
        super();
    }

    /**
     * @param propertyName Seperate multiple properties using commas.
     */
    public PropertyException(String propertyName) {
        super();
        this.propertyName = propertyName;
    }

    /**
     * @return Returns the errorCode.
     */
    public String getErrorCode() {
        return errorCode;
    }

    /**
     * @param errorCode The errorCode to set.
     */
    public void setErrorCode(String errorCode) {
        Validate.notEmpty(errorCode, "errorCode cannot be empty");
        this.errorCode = errorCode;
    }

    /**
     * @return Returns the index.
     */
    public Integer getIndex() {
        return index;
    }

    /**
     * @param index The index to set.
     */
    public void setIndex(Integer index) {
        this.index = index;
    }

    /**
     * For indexed items the property will be
     * collectionName[index].propertyName. For all others it will be
     * propertyName.
     * @return the full property name
     */
    public String getPropertyName() {
        if (isMultiProperty())
            return "This object has multiple properties. Use getPropertyList()";
        if (isIndexed())
            return prepareIndexedProperty(collectionName, index, propertyName);
        else
            return propertyName;
    }

    public void setPropertyName(String propertyName) {
        this.propertyName = propertyName;
    }

    /**
     * @return Returns the collectionName.
     */
    public String getCollectionName() {
        return collectionName;
    }

    /**
     * @param collectionName The collectionName to set.
     */
    public void setCollectionName(String collectionName) {
        this.collectionName = collectionName;
    }

    /**
     * @return Returns the value.
     */
    public Object getGuiltyObj() {
        return guiltyObj;
    }

    public void setGuiltyObj(Object guiltyObj) {
        this.guiltyObj = guiltyObj;
    }

    public List getPropertyNameList() {
        List list = new ArrayList();
        if (isMultiProperty()) {
            String[] props = StringUtils.split(propertyName, ',');
            for (int i = 0; i < props.length; i++) {
                String prop = StringUtils.deleteWhitespace(props[i]);
                if (isIndexed()) {
                    prop = prepareIndexedProperty(collectionName, index, prop);
                }
                list.add(prop);
            }
            return list;
        }
        else
            return list; //empty list
    }

    public boolean isIndexed() {
        if (index != null)
            return true;
        else
            return false;
    }

    public boolean isMultiProperty() {
        if (StringUtils.contains(propertyName, ','))
            return true;
        else
            return false;
    }

    private String prepareIndexedProperty(String collectionName, Integer index,
            String name) {
        if (collectionName != null && name != null && index != null) {
            StringBuffer buf = new StringBuffer(100);
            buf.append(collectionName);
            buf.append("[");
            buf.append(index);
            buf.append("].");
            buf.append(name);
            return buf.toString();
        }
        else
            return null;
    }

    /** @return string representation */
    public String toString() {
        return ToStringBuilder.reflectionToString(this);
    }
}