liquibase.util.csv.opencsv.bean.BeanField Maven / Gradle / Ivy
package liquibase.util.csv.opencsv.bean;
import liquibase.util.StringUtils;
import java.lang.reflect.Field;
/**
* Used to extend the Field class to add a required flag. This flag determines if the field has to have information,
* or in the case of the String class cannot be an empty String.
*/
public class BeanField {
private final Field field;
private final boolean required;
/**
* @param field - A java.lang.reflect.Field object.
* @param required - true if the field is required to contain a value, false if it is allowed to be null or blank String.
*/
public BeanField(Field field, boolean required) {
this.field = field;
this.required = required;
}
/**
* @return - a field object
* @see java.lang.reflect.Field
*/
public Field getField() {
return this.field;
}
/**
*
* @return - true if the field is required to be set (cannot be null or empty string), false otherwise.
*/
public boolean isRequired() {
return this.required;
}
/**
*
* @param bean - Object containing the field to be set.
* @param value - String containing the value to set the field to.
* @param - Type of the bean.
* @throws IllegalAccessException - Thrown on reflection error.
*/
public void setFieldValue(T bean, String value) throws IllegalAccessException {
if (required && (StringUtils.trimToNull(value) == null)) {
throw new IllegalStateException(String.format("Field '%s' is mandatory but no value was provided.", field.getName()));
}
if (StringUtils.trimToNull(value) != null) {
Class fieldType = field.getType();
field.setAccessible(true);
if (fieldType.equals(Boolean.TYPE)) {
field.setBoolean(bean, Boolean.valueOf(value.trim()));
} else if (fieldType.equals(Byte.TYPE)) {
field.setByte(bean, Byte.valueOf(value.trim()));
} else if (fieldType.equals(Double.TYPE)) {
field.setDouble(bean, Double.valueOf(value.trim()));
} else if (fieldType.equals(Float.TYPE)) {
field.setFloat(bean, Float.valueOf(value.trim()));
} else if (fieldType.equals(Integer.TYPE)) {
field.setInt(bean, Integer.parseInt(value.trim()));
} else if (fieldType.equals(Long.TYPE)) {
field.setLong(bean, Long.parseLong(value.trim()));
} else if (fieldType.equals(Short.TYPE)) {
field.setShort(bean, Short.valueOf(value.trim()));
} else if (fieldType.equals(Character.TYPE)) {
field.setChar(bean, value.charAt(0));
} else if (fieldType.isAssignableFrom(String.class)) {
field.set(bean, value);
} else {
throw new IllegalStateException(String.format("Unable to set field value for field '%s' with value '%s' " +
"- type is unsupported. Use primitive and String types only.", fieldType, value));
}
}
}
}