datatimestamp.java

一个用java写的地震分析软件(无源码)

package org.trinet.jdbc.datatypes;
import java.util.*;
import org.trinet.jdbc.*;

/** Extends the base abstract DataObject class to implements a stateful Timestamp value.
* Value is stored as a java.sql.Timestamp object.
*/
public class DataTimestamp extends DataObject implements DataTime, DateStringFormatter, Comparable, Cloneable {
/** Data member holding value. */
    java.sql.Timestamp value; 

/** Constructor sets the object value to NullValueDb.NULL_TIMESTAMP and the object state flags to their default settings
* (Null: true; Update: false; Mutable: true)).
*/
    public DataTimestamp () {
	this.value = (java.sql.Timestamp) NullValueDb.NULL_TIMESTAMP.clone();
    }
 
/** Constructor sets the timestamp to (long) value millisecs and the state flags, isNull() == false and isUpdate() == true.
*/
    public DataTimestamp (int value) {
	this((long) value);
    }

/** Constructor sets the timestamp to (long) value millisecs and the state flags, isNull() == false and isUpdate() == true.
*/
    public DataTimestamp (long value) {
	this.value = new java.sql.Timestamp(value);
	this.valueUpdate = true;
        this.valueNull = false;
    }

/** Constructor sets the timestamp to (long) value millisecs and the state flags, isNull() == false and isUpdate() == true.
*/
    public DataTimestamp (float value) {
	this((long) value);
    }

/** Constructor sets the timestamp to (long) value millisecs and the state flags, isNull() == false and isUpdate() == true.
*/
    public DataTimestamp (double value) {
	this((long) value);
    }

/** Constructor sets the timestamp to value of a string in SQL date escape format.
* or if a numeric string, to the numeric value as (long) millisecs.
* The state flags are set: isNull() == false and isUpdate() == true.
*/
    public DataTimestamp (String value) {
	this();
	if (value == null) setNull(true);
	else {
	    try {
		this.value = java.sql.Timestamp.valueOf(value);
		this.valueUpdate = true;
        	this.valueNull = false;
	    }
	    catch (IllegalArgumentException ex) {
		setValue(Double.parseDouble((String) value));
		this.valueUpdate = true;
        	this.valueNull = false;
	    }
	}
    }

/** Constructor sets the timestamp to a clone of the Timestamp object argument.
* The state flags are set Update:true and Null:false.
*/
    public DataTimestamp (java.sql.Timestamp object) {
	this();
	if (object == null) setNull(true);
	else {
	    this.value = (java.sql.Timestamp) object.clone();
	    this.valueUpdate = true;
	    this.valueNull = false;
	}
    }

/** Constructor sets the timestamp to a clone of input object Timestamp member. 
* The state flag values are set equivalent to those of the input object.
*/
    public DataTimestamp (DataTimestamp object) {
	this();
	if (object == null) setNull(true);
	else {
	    this.value = (java.sql.Timestamp) object.value.clone();
	    this.valueUpdate = object.valueUpdate;
	    this.valueNull = object.valueNull;
	    this.valueMutable = object.valueMutable;
	}
    }

/** Returns the default string for the value.
*/
    public String toString() {
	return value.toString(); 
    }

/** Returns the representation of the value formatted using the input pattern string. 
*/
    public String toDateString(String pattern) {
	return org.trinet.util.EpochTime.epochToString(getMilliSecsTime()/1000., pattern); 
    }

/** Returns the default string representation of the value.
/** Returns an SQL syntax string value of the timestamp date field; if isNull() == true, returns the string "NULL".
*/
    public String toStringSQL() {
	if (valueNull) return "NULL";
	return StringSQL.valueOf(value);
    }

/** Returns a String of "label: value" pairs for the object value and its state flags. 
* If isNull() == true the string "NULL" is printed for the value.
* "Value: " + value.toString() + " Null: " + isNull() + " Update: " + isUpdate() + " Mutable: " + isMutable()
*/
    public String classToString() {
	StringBuffer sb = new StringBuffer(128);
	sb.append("                                           ");
	sb.insert(0, "Value:");
	if (isNull()) sb.insert(7, "NULL");
	else sb.insert(7, value);
	sb.insert(32, "Null:");
	sb.insert(37, valueNull);
	sb.insert(43, "Update:");
	sb.insert(50, valueUpdate);
	sb.insert(56, "Mutable:");
	sb.insert(64, valueMutable);
	return sb.toString().trim();
//	return  "Value: " + value + " Null: " + valueNull + " Update: " + valueUpdate + " Mutable: " + valueMutable;
    }

/** Returns the value of java.sql.Timestamp.hashcode() for the timestamp value data member.
*/
    public int hashCode() {
	return value.hashCode(); 
    }

/** Returns true input object is an instance of DataTimestamp and it value and flags are equivalent to those of this instance..
* Returns false if input object is null or not an instance of DataTimestamp.
*/
    public boolean equals(Object object) {
	if (object == null || ! (object instanceof DataTimestamp)) return false;
	if (this.value.equals(((DataTimestamp) object).value) && 
	   this.valueUpdate == ((DataTimestamp) object).valueUpdate && 
	   this.valueMutable == ((DataTimestamp) object).valueMutable && 
	   this.valueNull == ((DataTimestamp) object).valueNull) return true;
	else return false;
    }

/** Returns true if argument object is instanceof this DataTimestamp or java.sql.Timestamp and its timestamp values are equal.
*  No state flag values are checked.
*/
    public boolean equalsValue(Object object) {
	if (object == null) return false;
	if (object instanceof DataTimestamp) {
	    if ( this.value.equals(((DataTimestamp) object).value) ) return true;
	    else return false; 
	}
	else if (object instanceof java.sql.Timestamp) {
	    if ( this.value.equals((java.sql.Timestamp) object) ) return true;
	    else return false; 
	}
	else return false; 
    }

/** Returns the value of java.sql.Timestamp.compareTo() for the data value member of this object.
* A return of 0 == this value equals, <0 == value less than, >0 == value greater than, the value of the argument object.
* Throws an exception if argument object is not an instanceof DataTimestamp.
*/
    public int compareTo(Object object) throws ClassCastException {
	if (object instanceof java.sql.Timestamp) {
	    return this.value.compareTo(object);
	}
	else if (object instanceof java.sql.Timestamp) {
	    return compareTo((DataTimestamp) object);
	}
	else throw new ClassCastException("compareTo(object) argument must be a java.sql.Timestamp or DatTimestamp class type: "
				+ object.getClass().getName());
    }

    public int compareTo(DataTimestamp object) {
	return this.value.compareTo(object.value);
    }

/** Overrides the DataObject.class clone(). Calls super.clone() and also clones the contained java.sql.Timestamp data member.
* Returns handle to new object.
*/
    public Object clone() {
	DataTimestamp obj = null;
	obj = (DataTimestamp) super.clone();
	obj.value = (java.sql.Timestamp) obj.value.clone();
	return obj;
    }

    private double getMilliSecsTime() {
        return (double) value.getTime() + (double) value.getNanos()/1000000.;
    }

/** Returns the value of the timestamp interpreted as integer seconds (not millisecs).
*/
    public int intValue() {
	double time = getMilliSecsTime()/1000.;
	return (int) Math.round(time);
    }

/** Returns the value of the timestamp as integer milliseconds.
*/
    public long longValue() {
	return (long) getMilliSecsTime();
    }

/** Returns the value of the timestamp as integer milliseconds.
*/
    public float floatValue() {
        return (float) (getMilliSecsTime()/1000.);
    }

/** Returns the value of the timestamp as integer milliseconds.
*/
    public double doubleValue() {
	return (double) getMilliSecsTime();
    }

/** Returns a new java.util.Date object derived from the timestamp value.
*/
    public java.util.Date dateValue() {
        return new java.util.Date(value.getTime());
    }

/** Returns a clone of the Timestamp object data member.
*/
    public java.sql.Timestamp timestampValue() {
	return (java.sql.Timestamp) value.clone();
    }

/** Sets the timestamp value to the argument value millisecs.
* Does a no-op if isMutable() == false.
* Sets the update status flag, isUpdate() == true.
* Sets the null status flag, isNull() == false.
* Returns a handle to this object instance.
*/
    public void setValue(int value) {
	setValue((long) value);
    }

/** Sets the timestamp value to the argument value millisecs.
* Does a no-op if isMutable() == false.
* Sets the update status flag, isUpdate() == true.
* Sets the null status flag, isNull() == false.
* Returns a handle to this object instance.
*/
    public void setValue(long value) {
	if(! isMutable()) return;
        long secs = (value/1000) * 1000;
	this.value.setTime(value);
        long nanosecs = (value - secs) * 1000000;
	this.value.setNanos((int) nanosecs);
	this.valueNull = false;
	this.valueUpdate = true;
	return;
    }

/** Sets the timestamp value to the argument value millisecs.
* Does a no-op if isMutable() == false.
* Sets the update status flag, isUpdate() == true.
* Sets the null status flag, isNull() == false.
* Returns a handle to this object instance.
*/
    public void setValue(float value) {
	setValue((long) value);
    }

/** Sets the timestamp value to the argument value millisecs.
* Does a no-op if isMutable() == false.
* Sets the update status flag, isUpdate() == true.
* Sets the null status flag, isNull() == false.
* Returns a handle to this object instance.
*/
    public void setValue(double value) {
	setValue((long) value);
    }

/** Sets the timestamp value to the time equivalent of the input object value.
* Input argument can be an instanceof Date, Number, DataObject, or String. Exceptions are thrown if the input argument can
* not be formatted/parsed as a Date.
* Does a no-op if isMutable() == false.
* Sets the update status flag, isUpdate() == true.
* Sets the null status flag, isNull() == false.
* Returns a handle to this object instance.
*/
    public void setValue(Object object) throws ClassCastException {
	if(! isMutable()) return;
//	if (object == null) throw new NullPointerException("setValue(Object) argument null");
	if (object == null) {
	    setNull(true);
	}
	else if (java.sql.Timestamp.class.isInstance(object)) {
	    java.sql.Timestamp ts = (java.sql.Timestamp) object;
            long millisecs = ts.getTime() + ts.getNanos()/1000000;
	    setValue(millisecs);
	}
	else if (java.util.Date.class.isInstance(object)) {
	    setValue(((java.util.Date) object).getTime());
	}
        else if (Number.class.isInstance(object)) {
            setValue(((Number) object).longValue());
        }
        else if (DataObject.class.isInstance(object)) {
            setValue(((DataObject) object).longValue());
        }
        else if (String.class.isInstance(object)) {
	    try {
		this.value = java.sql.Timestamp.valueOf((String) object);
		this.valueUpdate = true;
		this.valueNull = false;
	    }
	    catch (IllegalArgumentException ex) {
		setValue(Double.parseDouble((String) object));
	    }
        }
        else throw new ClassCastException("setValue(Object) invalid object argument class type: " + object.getClass().getName());
	return;
    }

/** Sets the object value to NullValueDB.NULL_TIMESTAMP and sets the flags, isNull() == true and isUpdate() == true. */
    public DataObject setNull(boolean value) {
	setValue(NullValueDb.NULL_TIMESTAMP.getTime());
	this.value.setNanos(0);
        this.valueNull = true;
	return this;
    }


/**
* Returns true if a value can be parsed from input StringTokenizer.
* Does not set value and returns false if tokenizer.hasMoreTokens() == false
* or a float cannot be parsed from token.
*/
    public boolean parseValue(StringTokenizer tokenizer) {
        if (! tokenizer.hasMoreTokens()) return false;
        boolean retVal = false;
        try {
            setValue(tokenizer.nextToken());
            retVal = true;
        }
        catch (Exception ex) {
            System.err.println("DataTimestamp parseValue()" + ex.getMessage());
        }
        return retVal;
    }

}