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SPL(Structured Process Language) A programming language specially for structured data computing.
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package com.scudata.dm.op;
import com.scudata.array.IArray;
import com.scudata.array.ObjectArray;
import com.scudata.common.MessageManager;
import com.scudata.common.RQException;
import com.scudata.dm.BaseRecord;
import com.scudata.dm.Context;
import com.scudata.dm.DataStruct;
import com.scudata.dm.IndexTable;
import com.scudata.dm.Record;
import com.scudata.dm.Sequence;
import com.scudata.expression.CurrentSeq;
import com.scudata.expression.Expression;
import com.scudata.expression.Function;
import com.scudata.resources.EngineMessage;
import com.scudata.util.Variant;
/**
* ???Ӳ????????????С??αꡢ?ܵ??????Ӳ???
* @author WangXiaoJun
*
*/
public class Switch extends Operation {
private String []fkNames; // ????ֶ???????
private String []timeFkNames; // ʱ??????ֶ???????
private Sequence []codes; // ά??????
private Expression []exps; // ά????????????ʽ????
private Expression []timeExps; // ά????ʱ????¼?????
private String opt; // ѡ??
private IndexTable []indexTables; // ά????Ӧ????????????
private boolean isIsect; // ????????
private boolean isDiff; // ????????
private boolean isLeft; // ?????ӣ??Ҳ???F??Ӧֵʱ???????????ݽṹ???ɿ?ֵ?????????⣩??¼??Ӧ
private DataStruct []dataStructs; // isLeftΪtrueʱʹ?ã???Ӧά???????ݽṹ
private int []keySeqs; // ά???????ֶε????
public String[] getFkNames() {
return fkNames;
}
public String [] getTimeFkNames() {
return timeFkNames;
}
public Sequence[] getCodes() {
return codes;
}
public Expression[] getExps() {
return exps;
}
public boolean isIsect() {
return isIsect;
}
public boolean isDiff() {
return isDiff;
}
public Switch(String[] fkNames, Sequence[] codes, Expression[] exps, String opt) {
this(null, fkNames, codes, exps, opt);
}
public Switch(Function function, String[] fkNames, Sequence[] codes, Expression[] exps, String opt) {
this(function, fkNames, null, codes, exps, null, opt);
}
/**
* ???캯??
* @param function ?????ĺ???????
* @param fkNames ????ֶ???????
* @param timeFkNames ʱ???????????
* @param codes ά??????
* @param exps ά??????????
* @param timeExps ά????ʱ????¼?????
* @param opt ѡ??
*/
public Switch(Function function, String[] fkNames, String[] timeFkNames, Sequence[] codes, Expression[] exps, Expression[] timeExps, String opt) {
super(function);
this.fkNames = fkNames;
this.timeFkNames = timeFkNames;
this.codes = codes;
this.exps = exps;
this.timeExps = timeExps;
this.opt = opt;
if (opt != null) {
if (opt.indexOf('i') != -1) {
isIsect = true;
} else if (opt.indexOf('d') != -1) {
isDiff = true;
} else if (opt.indexOf('1') != -1) {
isLeft = true;
}
}
}
/**
* ???ش˲????Ƿ??ʹ??¼??????
* @return true?????ʹ??¼?????٣?false?????????
*/
public boolean isDecrease() {
return isIsect || isDiff;
}
/**
* ???ƴ˲???
* @param ctx ??????????
* @return ???Ƶ?Switch????
*/
public Operation duplicate(Context ctx) {
Expression []exps = dupExpressions(this.exps, ctx);
Expression []timeExps = dupExpressions(this.timeExps, ctx);
return new Switch(function, fkNames, getTimeFkNames(), codes, exps, timeExps, opt);
}
public IndexTable getIndexTable(int index, Context ctx) {
if (indexTables == null) {
int count = codes.length;
indexTables = new IndexTable[count];
if (isLeft) {
dataStructs = new DataStruct[count];
keySeqs = new int[count];
}
for (int i = 0; i < count; ++i) {
Sequence code = codes[i];
if (code == null) {
continue;
}
Expression exp = null;
if (exps != null && exps.length > i) {
exp = exps[i];
}
Expression timeExp = null;
if (timeExps != null && timeExps.length > i) {
timeExp = timeExps[i];
}
if (timeExp != null) {
Expression []curExps = new Expression[]{exp, timeExp};
indexTables[i] = code.getIndexTable(curExps, ctx);
if (indexTables[i] == null) {
indexTables[i] = code.newIndexTable(curExps, ctx);
}
} else if (exp == null || !(exp.getHome() instanceof CurrentSeq)) { // #
indexTables[i] = code.getIndexTable(exp, ctx);
if (indexTables[i] == null) {
indexTables[i] = code.newIndexTable(exp, ctx);
}
}
if (isLeft) {
dataStructs[i] = code.dataStruct();
if (dataStructs[i] == null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPurePmt"));
}
int key = -1;
if (exp != null) {
key = dataStructs[i].getFieldIndex(exp.getIdentifierName());
}
if (key == -1) {
int []pks = dataStructs[i].getPKIndex();
if (pks != null && pks.length == 1) {
key = pks[0];
}
}
if (key != -1) {
keySeqs[i] = key;
}
}
}
}
return indexTables[index];
}
/**
* ?Դ?????????????ӣ????????ӽ??
* @param seq Ҫ??????????
* @param ctx ??????????
* @return ???ӽ??
*/
public Sequence process(Sequence seq, Context ctx) {
if (isIsect) {
switch_i(seq, ctx);
if (seq.length() == 0) {
return null;
}
} else if (isDiff) {
switch_d(seq, ctx);
if (seq.length() == 0) {
return null;
}
} else {
switch1(seq, ctx);
}
return seq;
}
private void switch1(Sequence data, Context ctx) {
int fkCount = fkNames.length;
IArray mems = data.getMems();
int len = mems.size();
for (int f = 0; f < fkCount; ++f) {
IndexTable indexTable = getIndexTable(f, ctx);
String fkName = fkNames[f];
String timeName = getTimeFkNames() == null ? null : getTimeFkNames()[f];
int col = -1; // ?ֶ?????һ????¼??????
int timeCol = -1;
BaseRecord prevRecord = null; // ??һ????¼
if (indexTable != null) {
if (isLeft) {
DataStruct ds = dataStructs[f];
int keySeq = keySeqs[f];
if (timeName == null) {
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object key = cur.getNormalFieldValue(col);
Object p = indexTable.find(key);
if (p != null) {
cur.setNormalFieldValue(col, p);
} else {
Record record = new Record(ds);
record.setNormalFieldValue(keySeq, key);
cur.setNormalFieldValue(col, record);
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
} else {
// ??ʱ????¼?ʱ????ʱ???????ֶβ???
Object []values = new Object[2];
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
timeCol = cur.getFieldIndex(timeName);
if (timeCol < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(timeName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
values[0] = cur.getNormalFieldValue(col);
values[1] = cur.getNormalFieldValue(timeCol);
Object p = indexTable.find(values);
if (p != null) {
cur.setNormalFieldValue(col, p);
} else {
Record record = new Record(ds);
record.setNormalFieldValue(keySeq, values[0]);
cur.setNormalFieldValue(col, record);
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
}
} else {
if (timeName == null) {
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object key = cur.getNormalFieldValue(col);
Object p = indexTable.find(key);
cur.setNormalFieldValue(col, p);
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
} else {
// ??ʱ????¼?ʱ????ʱ???????ֶβ???
Object []values = new Object[2];
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
timeCol = cur.getFieldIndex(timeName);
if (timeCol < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(timeName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
values[0] = cur.getNormalFieldValue(col);
values[1] = cur.getNormalFieldValue(timeCol);
Object p = indexTable.find(values);
cur.setNormalFieldValue(col, p);
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
}
}
} else if (codes[f] == null) {
// ָ???ֶα??ֵ
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object val = cur.getNormalFieldValue(col);
if (val instanceof BaseRecord) {
cur.setNormalFieldValue(col, ((BaseRecord)val).getPKValue());
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
} else { // #
Sequence code = codes[f];
int codeLen = code.length();
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object val = cur.getNormalFieldValue(col);
if (val instanceof Number) {
int seq = ((Number)val).intValue();
if (seq > 0 && seq <= codeLen) {
cur.setNormalFieldValue(col, code.getMem(seq));
} else {
cur.setNormalFieldValue(col, null);
}
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
}
}
}
private void switch_i(Sequence data, Context ctx) {
int fkCount = fkNames.length;
IArray mems = data.getMems();
for (int f = 0; f < fkCount; ++f) {
IndexTable indexTable = getIndexTable(f, ctx);
int len = mems.size();
String fkName = fkNames[f];
String timeName = getTimeFkNames() == null ? null : getTimeFkNames()[f];
int col = -1; // ?ֶ?????һ????¼??????
int timeCol = -1;
BaseRecord prevRecord = null; // ??һ????¼
if (indexTable != null) {
ObjectArray resultMems = new ObjectArray(len);
if (timeName == null) {
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object key = cur.getNormalFieldValue(col);
Object p = indexTable.find(key);
if (p != null) {
cur.setNormalFieldValue(col, p);
resultMems.add(cur);
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
} else {
// ??ʱ????¼?ʱ????ʱ???????ֶβ??ң????????һ???ֶ???
Object []values = new Object[2];
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
timeCol = cur.getFieldIndex(timeName);
if (timeCol < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(timeName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
values[0] = cur.getNormalFieldValue(col);
values[1] = cur.getNormalFieldValue(timeCol);
Object p = indexTable.find(values);
if (p != null) {
cur.setNormalFieldValue(col, p);
resultMems.add(cur);
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
}
mems = resultMems;
} else if (codes[f] == null) {
// ָ???ֶα??ֵ
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object val = cur.getNormalFieldValue(col);
if (val instanceof BaseRecord) {
cur.setNormalFieldValue(col, ((BaseRecord)val).getPKValue());
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
} else { // #
ObjectArray resultMems = new ObjectArray(len);
Sequence code = codes[f];
int codeLen = code.length();
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object val = cur.getNormalFieldValue(col);
if (val instanceof Number) {
int seq = ((Number)val).intValue();
if (seq > 0 && seq <= codeLen) {
Object d = code.getMem(seq);
if (Variant.isTrue(d)) {
cur.setNormalFieldValue(col, d);
resultMems.add(cur);
}
}
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
mems = resultMems;
}
}
if (mems.size() != data.length()) {
data.setMems(mems);
}
}
private void switch_d(Sequence data, Context ctx) {
int fkCount = fkNames.length;
IArray mems = data.getMems();
for (int f = 0; f < fkCount; ++f) {
IndexTable indexTable = getIndexTable(f, ctx);
int len = mems.size();
String fkName = fkNames[f];
String timeName = getTimeFkNames() == null ? null : getTimeFkNames()[f];
int col = -1; // ?ֶ?????һ????¼??????
int timeCol = -1;
BaseRecord prevRecord = null; // ??һ????¼
if (indexTable != null) {
ObjectArray resultMems = new ObjectArray(len);
if (timeName == null) {
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object key = cur.getNormalFieldValue(col);
if (indexTable.find(key) == null) {
resultMems.add(cur);
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
} else {
// ??ʱ????¼?ʱ????ʱ???????ֶβ???
Object []values = new Object[2];
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
timeCol = cur.getFieldIndex(timeName);
if (timeCol < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(timeName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
values[0] = cur.getNormalFieldValue(col);
values[1] = cur.getNormalFieldValue(timeCol);
if (indexTable.find(values) == null) {
resultMems.add(cur);
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
}
mems = resultMems;
} else if (codes[f] == null) {
// ָ???ֶα??ֵ
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object val = cur.getNormalFieldValue(col);
if (val instanceof BaseRecord) {
cur.setNormalFieldValue(col, ((BaseRecord)val).getPKValue());
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
} else { // #
ObjectArray resultMems = new ObjectArray(len);
Sequence code = codes[f];
int codeLen = code.length();
for (int i = 1; i <= len; ++i) {
Object obj = mems.get(i);
if (obj instanceof BaseRecord) {
BaseRecord cur = (BaseRecord)obj;
if (prevRecord == null || !prevRecord.isSameDataStruct(cur)) {
col = cur.getFieldIndex(fkName);
if (col < 0) {
MessageManager mm = EngineMessage.get();
throw new RQException(fkName + mm.getMessage("ds.fieldNotExist"));
}
prevRecord = cur;
}
Object val = cur.getNormalFieldValue(col);
if (val instanceof Number) {
int seq = ((Number)val).intValue();
if (seq < 1 || seq > codeLen || Variant.isFalse(code.getMem(seq))) {
resultMems.add(cur);
}
}
} else if (obj != null) {
MessageManager mm = EngineMessage.get();
throw new RQException(mm.getMessage("engine.needPmt"));
}
}
mems = resultMems;
}
}
if (mems.size() != data.length()) {
data.setMems(mems);
}
}
}