datadate.java

一个用java写的地震分析软件(无源码)-used to write a seismic analysis software (without source)

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

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

/** Default SimpleDateFormat pattern string used for String conversions. */
    protected String dateFormat = "yyyy-MM-dd HH:mm:ss.SSS";

/** Constructor sets the object value to NullValueDb.NULL_DATE and the object state flags to their default settings
* (Null: true; Update: false; Mutable: true)).
*/
    public DataDate () {
	this.value = (java.util.Date) NullValueDb.NULL_DATE.clone();
    }
 
/** Constructor sets the date to (long) value millisecs and the state flags, isNull() == false and isUpdate() == true.
*/
    public DataDate (int value) {
        this((long) value);
    }

/** Constructor sets the date to (long) value millisecs and the state flags, isNull() == false and isUpdate() == true.
*/
    public DataDate (long value) {
        this.value = new java.util.Date(value);
        this.valueUpdate = true;
        this.valueNull = false;
    }

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

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

/** Constructor sets the date to value of a string in SQL date escape format.
* or if a numeric string, to the numeric value as (long) millisecs.
* Assumes simple date format for UTC of: "yyyy-MM-dd HH:mm:ss.SSS".
* The state flags are set: isNull() == false and isUpdate() == true.
* @throws java.lang.NumberFormatException string cannot be parsed into date  
*/
    public DataDate (String value) {
	this();
	if (value == null) setNull(true);
	else {
            this.value = org.trinet.util.EpochTime.stringToDate(value);
            if (this.value == null) {
                setValue(Double.parseDouble((String) value));
            }
            this.valueUpdate = true;
            this.valueNull = false;
	}
    }

/** Constructor sets the date to value of a string in SQL date escape format.
* The specified input pattern (SimpleDateFormat) is used to parse the input string.
* The state flags are set: isNull() == false and isUpdate() == true.
*/
    public DataDate (String value, String pattern) {
	this();
	if (value == null) setNull(true);
	else {
            this.value = org.trinet.util.EpochTime.stringToDate(value, pattern);
            this.valueUpdate = true;
            this.valueNull = false;
            this.dateFormat = pattern;
	}
    }

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

/** Constructor sets the date to a clone of the date object internal to the DataDate argument.
* The state flag values are set to those of the DataDate object.
*/
    public DataDate (DataDate object) {
	this();
	if (object == null) setNull(true);
	else {
	    this.value = (java.util.Date) object.value.clone();
	    this.valueUpdate = object.valueUpdate;
	    this.valueNull = object.valueNull;
	    this.valueMutable = object.valueMutable;
	}
    }

/** Returns the representation of the value formatted using the default format pattern.
*/
    public String toDateString() {
	return org.trinet.util.EpochTime.dateToString(value, dateFormat); 
    }

/** Sets the default SimpleDateFormat pattern for String representations.
*/
    public void setDateFormat(String pattern) {
	this.dateFormat = pattern;
    }

/** Returns the representation of the value formatted using the specified format pattern.
*/
    public String toDateString(String pattern) {
	return org.trinet.util.EpochTime.dateToString(value, pattern); 
    }

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

/** Returns an SQL syntax string value of the date 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.util.Date.hashcode() for the date value.
*/
    public int hashCode() {
	return value.hashCode(); 
    }

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

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

/** Returns the value of java.util.Date.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 DataDate.
*/
    public int compareTo(Object object) throws ClassCastException {
	if ( object instanceof java.util.Date) {
	    return this.value.compareTo(object);
	}
	else if (object instanceof DataDate) {
	    return compareTo((DataDate) object);
	}
	else throw new ClassCastException("compareTo(object) argument must be a jav.util.Date or DataDate class type: "
				+ object.getClass().getName());
    }

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

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

/** Returns the value of the date interpreted as integer seconds (not millisecs).
*/
    public int intValue() {
	long time = value.getTime()/1000;
	return (int) time;
    }

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

/** Returns the value of the date as integer milliseconds.
*/
    public float floatValue() {
	return (float) value.getTime();
    }

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

/** Returns a clone of the Date data member.
*/
    public java.util.Date dateValue() {
        return (java.util.Date) value.clone();
    }

/** Returns a new java.util.Timestamp object derived the date value.
*/
    public java.sql.Timestamp timestampValue() {
	return new java.sql.Timestamp(value.getTime());
    }

/** Sets the date time 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 date time 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;
	this.value.setTime(value);
	this.valueNull = false;
	this.valueUpdate = true;
	return;
    }

/** Sets the date time 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 date time 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 date time value to the time equivalent of the input argument 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, NumberFormatException {
	if(! isMutable()) return;
//	if (object == null) throw new NullPointerException("setValue(Object) argument null");
	if (object == null) {
	    setNull(true);
	}
	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 = org.trinet.util.EpochTime.stringToDate((String) object);
		this.valueNull = false;
		this.valueUpdate = true;
            }
            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_DATE and sets the flags, isNull() == true and isUpdate() == true. */
   public DataObject setNull(boolean value) {
	setValue(NullValueDb.NULL_DATE.getTime());
	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 java.util.Date cannot be parsed from token.
*/
    public boolean parseValue(StringTokenizer tokenizer) {
        if (! tokenizer.hasMoreTokens()) return false;
        setValue( EpochTime.stringToDate(tokenizer.nextToken(), dateFormat) ); // stringToDate returns null if not parseable
        return true;
    }

}