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SPL(Structured Process Language) A programming language specially for structured data computing.
package com.scudata.expression.fn;
import com.scudata.common.MessageManager;
import com.scudata.common.ObjectCache;
import com.scudata.common.RQException;
import com.scudata.dm.Context;
import com.scudata.dm.Sequence;
import com.scudata.expression.Function;
import com.scudata.expression.Node;
import com.scudata.resources.EngineMessage;
/**
* blob?????????л?????ÿ?ֽڶ?Ӧһ????Ա
* blob(b)
* @author RunQian
*
*/
public class Blob extends Function {
/**
* ??????ʽ????Ч?ԣ???Ч???׳??쳣
*/
public void checkValidity() {
if (param == null) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.missingParam"));
} else if (!param.isLeaf()) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.invalidParam"));
}
}
public Node optimize(Context ctx) {
param.optimize(ctx);
return this;
}
public Object calculate(Context ctx) {
Object obj = param.getLeafExpression().calculate(ctx);
if (obj instanceof Sequence) {
return toBlob((Sequence)obj, option);
} else if (obj instanceof byte[]) {
return toSequence((byte[])obj, option);
} else if (obj == null) {
return null;
} else {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.paramTypeError"));
}
}
private static Sequence toSequence(byte []bytes, String opt) {
int len = bytes.length;
if (len == 0) {
return null;
}
if (opt != null) {
if (opt.indexOf('4') != -1) {
if (len % 4 != 0) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.invalidParam"));
}
Sequence seq = new Sequence(len / 4);
if (opt.indexOf('r') == -1) {
for (int index = 0; index < len; index += 4) {
int n = (bytes[index] << 24) + ((bytes[index + 1] & 0xff) << 16) +
((bytes[index + 2] & 0xff) << 8) + (bytes[index + 3] & 0xff);
seq.add(n);
}
} else {
for (int index = 0; index < len; index += 4) {
int n = (bytes[index + 3] << 24) + ((bytes[index + 2] & 0xff) << 16) +
((bytes[index + 1] & 0xff) << 8) + (bytes[index] & 0xff);
seq.add(n);
}
}
return seq;
} else if (opt.indexOf('8') != -1) {
if (len % 8 != 0) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.invalidParam"));
}
Sequence seq = new Sequence(len / 8);
if (opt.indexOf('r') == -1) {
for (int index = 0; index < len; index += 8) {
long n = (((long)bytes[index] << 56) +
((long)(bytes[index + 1] & 0xff) << 48) +
((long)(bytes[index + 2] & 0xff) << 40) +
((long)(bytes[index + 3] & 0xff) << 32) +
((long)(bytes[index + 4] & 0xff) << 24) +
((bytes[index + 5] & 0xff) << 16) +
((bytes[index + 6] & 0xff) << 8) +
(bytes[index + 7] & 0xff));
seq.add(n);
}
} else {
for (int index = 0; index < len; index += 8) {
long n = (((long)bytes[index + 7] << 56) +
((long)(bytes[index + 6] & 0xff) << 48) +
((long)(bytes[index + 5] & 0xff) << 40) +
((long)(bytes[index + 4] & 0xff) << 32) +
((long)(bytes[index + 3] & 0xff) << 24) +
((bytes[index + 2] & 0xff) << 16) +
((bytes[index + 1] & 0xff) << 8) +
(bytes[index] & 0xff));
seq.add(n);
}
}
return seq;
} else if (opt.indexOf('f') != -1) {
if (len % 4 != 0) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.invalidParam"));
}
Sequence seq = new Sequence(len / 4);
if (opt.indexOf('r') == -1) {
for (int index = 0; index < len; index += 4) {
int n = (bytes[index] << 24) + ((bytes[index + 1] & 0xff) << 16) +
((bytes[index + 2] & 0xff) << 8) + (bytes[index + 3] & 0xff);
seq.add(Float.intBitsToFloat(n));
}
} else {
for (int index = 0; index < len; index += 4) {
int n = (bytes[index + 3] << 24) + ((bytes[index + 2] & 0xff) << 16) +
((bytes[index + 1] & 0xff) << 8) + (bytes[index] & 0xff);
seq.add(Float.intBitsToFloat(n));
}
}
return seq;
} else if (opt.indexOf('d') != -1) {
if (len % 8 != 0) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.invalidParam"));
}
Sequence seq = new Sequence(len / 8);
if (opt.indexOf('r') == -1) {
for (int index = 0; index < len; index += 8) {
long n = (((long)bytes[index] << 56) +
((long)(bytes[index + 1] & 0xff) << 48) +
((long)(bytes[index + 2] & 0xff) << 40) +
((long)(bytes[index + 3] & 0xff) << 32) +
((long)(bytes[index + 4] & 0xff) << 24) +
((bytes[index + 5] & 0xff) << 16) +
((bytes[index + 6] & 0xff) << 8) +
(bytes[index + 7] & 0xff));
seq.add(Double.longBitsToDouble(n));
}
} else {
for (int index = 0; index < len; index += 8) {
long n = (((long)bytes[index + 7] << 56) +
((long)(bytes[index + 6] & 0xff) << 48) +
((long)(bytes[index + 5] & 0xff) << 40) +
((long)(bytes[index + 4] & 0xff) << 32) +
((long)(bytes[index + 3] & 0xff) << 24) +
((bytes[index + 2] & 0xff) << 16) +
((bytes[index + 1] & 0xff) << 8) +
(bytes[index] & 0xff));
seq.add(Double.longBitsToDouble(n));
}
}
return seq;
}
}
Sequence seq = new Sequence(len);
for (byte b : bytes) {
seq.add(ObjectCache.getInteger(b & 0xff));
}
return seq;
}
private static byte[] toBlob(Sequence seq, String opt) {
int len = seq.length();
if (len == 0) {
return null;
}
if (opt != null) {
if (opt.indexOf('4') != -1) {
byte []bytes = new byte[len * 4];
int index = 0;
if (opt.indexOf('r') == -1) {
for (int i = 1; i <= len; ++i) {
Object obj = seq.getMem(i);
if (!(obj instanceof Number)) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.paramTypeError"));
}
int n = ((Number)obj).intValue();
bytes[index++] = (byte)(n >>> 24);
bytes[index++] = (byte)(n >>> 16);
bytes[index++] = (byte)(n >>> 8);
bytes[index++] = (byte)n;
}
} else {
for (int i = 1; i <= len; ++i) {
Object obj = seq.getMem(i);
if (!(obj instanceof Number)) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.paramTypeError"));
}
int n = ((Number)obj).intValue();
bytes[index++] = (byte)n;
bytes[index++] = (byte)(n >>> 8);
bytes[index++] = (byte)(n >>> 16);
bytes[index++] = (byte)(n >>> 24);
}
}
return bytes;
} else if (opt.indexOf('8') != -1) {
byte []bytes = new byte[len * 8];
int index = 0;
if (opt.indexOf('r') == -1) {
for (int i = 1; i <= len; ++i) {
Object obj = seq.getMem(i);
if (!(obj instanceof Number)) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.paramTypeError"));
}
long n = ((Number)obj).longValue();
bytes[index++] = (byte)(n >>> 56);
bytes[index++] = (byte)(n >>> 48);
bytes[index++] = (byte)(n >>> 40);
bytes[index++] = (byte)(n >>> 32);
bytes[index++] = (byte)(n >>> 24);
bytes[index++] = (byte)(n >>> 16);
bytes[index++] = (byte)(n >>> 8);
bytes[index++] = (byte)n;
}
} else {
for (int i = 1; i <= len; ++i) {
Object obj = seq.getMem(i);
if (!(obj instanceof Number)) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.paramTypeError"));
}
long n = ((Number)obj).longValue();
bytes[index++] = (byte)n;
bytes[index++] = (byte)(n >>> 8);
bytes[index++] = (byte)(n >>> 16);
bytes[index++] = (byte)(n >>> 24);
bytes[index++] = (byte)(n >>> 32);
bytes[index++] = (byte)(n >>> 40);
bytes[index++] = (byte)(n >>> 48);
bytes[index++] = (byte)(n >>> 56);
}
}
return bytes;
} else if (opt.indexOf('f') != -1) {
byte []bytes = new byte[len * 4];
int index = 0;
if (opt.indexOf('r') == -1) {
for (int i = 1; i <= len; ++i) {
Object obj = seq.getMem(i);
if (!(obj instanceof Number)) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.paramTypeError"));
}
int n = Float.floatToIntBits(((Number)obj).floatValue());
bytes[index++] = (byte)(n >>> 24);
bytes[index++] = (byte)(n >>> 16);
bytes[index++] = (byte)(n >>> 8);
bytes[index++] = (byte)n;
}
} else {
for (int i = 1; i <= len; ++i) {
Object obj = seq.getMem(i);
if (!(obj instanceof Number)) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.paramTypeError"));
}
int n = Float.floatToIntBits(((Number)obj).floatValue());
bytes[index++] = (byte)n;
bytes[index++] = (byte)(n >>> 8);
bytes[index++] = (byte)(n >>> 16);
bytes[index++] = (byte)(n >>> 24);
}
}
return bytes;
} else if (opt.indexOf('d') != -1) {
byte []bytes = new byte[len * 8];
int index = 0;
if (opt.indexOf('r') == -1) {
for (int i = 1; i <= len; ++i) {
Object obj = seq.getMem(i);
if (!(obj instanceof Number)) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.paramTypeError"));
}
long n = Double.doubleToLongBits(((Number)obj).doubleValue());
bytes[index++] = (byte)(n >>> 56);
bytes[index++] = (byte)(n >>> 48);
bytes[index++] = (byte)(n >>> 40);
bytes[index++] = (byte)(n >>> 32);
bytes[index++] = (byte)(n >>> 24);
bytes[index++] = (byte)(n >>> 16);
bytes[index++] = (byte)(n >>> 8);
bytes[index++] = (byte)n;
}
} else {
for (int i = 1; i <= len; ++i) {
Object obj = seq.getMem(i);
if (!(obj instanceof Number)) {
MessageManager mm = EngineMessage.get();
throw new RQException("blob" + mm.getMessage("function.paramTypeError"));
}
long n = Double.doubleToLongBits(((Number)obj).doubleValue());
bytes[index++] = (byte)n;
bytes[index++] = (byte)(n >>> 8);
bytes[index++] = (byte)(n >>> 16);
bytes[index++] = (byte)(n >>> 24);
bytes[index++] = (byte)(n >>> 32);
bytes[index++] = (byte)(n >>> 40);
bytes[index++] = (byte)(n >>> 48);
bytes[index++] = (byte)(n >>> 56);
}
}
return bytes;
}
}
byte []bytes = new byte[len];
for (int i = 1; i <= len; ++i) {
Object obj = seq.getMem(i);
if (obj instanceof Number) {
bytes[i - 1] = ((Number)obj).byteValue();
} else {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needIntSeries"));
}
}
return bytes;
}
}