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- /*##############################################################################
- Copyright (C) 2011 HPCC Systems.
- All rights reserved. This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU Affero General Public License as
- published by the Free Software Foundation, either version 3 of the
- License, or (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Affero General Public License for more details.
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- ############################################################################## */
- #include "jliball.hpp"
- #include "hql.hpp"
- #include "platform.h"
- #include "jlib.hpp"
- #include "jexcept.hpp"
- #include "jmisc.hpp"
- #include "hql.hpp"
- #include "hqlexpr.hpp"
- #include "hqlfunc.hpp"
- #include "hqlcpputil.hpp"
- #include "hqlfold.hpp"
- #include "hqlutil.hpp"
- #include "hqlstmt.hpp"
- #include "hqlwcpp.hpp"
- #include "hqlcpp.ipp"
- #include "hqltcppc.ipp"
- #include "hqlhtcpp.ipp"
- #include "hqlcerrors.hpp"
- #include "hqlcatom.hpp"
- #include "hqlpmap.hpp"
- #include "hqlthql.hpp"
- #include "hqlattr.hpp"
- #include "hqlusage.hpp"
- //#define TraceExprPrintLog(x, expr) PrintLog(x ": %s", expr->toString(StringBuffer()).str());
- //---------------------------------------------------------------------------
- CChildSetColumnInfo::CChildSetColumnInfo(CContainerInfo * _container, CMemberInfo * _prior, IHqlExpression * _column) : CColumnInfo(_container, _prior, _column)
- {
- }
- void CChildSetColumnInfo::buildColumnExpr(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, CHqlBoundExpr & bound)
- {
- OwnedHqlExpr address = getColumnAddress(translator, ctx, selector, boolType, 0);
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, sizeof(bool));
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(bool)+sizeof(size32_t));
- bound.isAll.setown(convertAddressToValue(address, boolType));
- bound.length.setown(convertAddressToValue(addressSize, sizetType));
- bound.expr.setown(convertAddressToValue(addressData, queryType()));
- }
- void CChildSetColumnInfo::gatherSize(SizeStruct & target)
- {
- addVariableSize(sizeof(bool) + sizeof(size32_t), target);
- }
- IHqlExpression * CChildSetColumnInfo::buildSizeOfUnbound(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector)
- {
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, sizeof(bool));
- OwnedHqlExpr length = convertAddressToValue(addressSize, sizetType);
- OwnedHqlExpr boundSize = translator.getBoundSize(column->queryType(), length, NULL);
- return createValue(no_translated, LINK(sizetType), adjustValue(boundSize, sizeof(bool)+sizeof(size32_t)));
- }
- void CChildSetColumnInfo::buildDeserialize(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * helper)
- {
- OwnedHqlExpr address = getColumnAddress(translator, ctx, selector, boolType, 0);
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, sizeof(bool));
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(bool)+sizeof(size32_t));
- size32_t sizeExtra = sizeof(bool)+sizeof(size32_t);
- //Read the all flag and the size
- OwnedHqlExpr sizeAllSizet = getSizetConstant(sizeExtra);
- callDeserializeGetN(translator, ctx, helper, sizeAllSizet, address);
- OwnedHqlExpr targetSize = convertAddressToValue(addressSize, sizetType);
- OwnedHqlExpr unboundSize = createTranslated(targetSize);
- checkAssignOk(translator, ctx, selector, unboundSize, sizeExtra);
- callDeserializeGetN(translator, ctx, helper, targetSize, addressData);
- OwnedHqlExpr sizeOfExpr = createValue(no_sizeof, LINK(sizetType), LINK(selector->queryExpr()));
- OwnedHqlExpr srcSize = adjustValue(targetSize, sizeExtra);
- ctx.associateExpr(sizeOfExpr, srcSize);
- }
- bool CChildSetColumnInfo::buildReadAhead(HqlCppTranslator & translator, BuildCtx & ctx, ReadAheadState & state)
- {
- OwnedHqlExpr sizeAllFlag = getSizetConstant(1);
- callDeserializerSkipInputTranslatedSize(translator, ctx, state.helper, sizeAllFlag);
- OwnedHqlExpr sizeOfItems = callDeserializerGetSize(translator, ctx, state.helper);
- callDeserializerSkipInputTranslatedSize(translator, ctx, state.helper, sizeOfItems);
- return true;
- }
- void CChildSetColumnInfo::setColumn(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * _value)
- {
- OwnedHqlExpr address = getColumnAddress(translator, ctx, selector, boolType, 0);
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, sizeof(bool));
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(bool)+sizeof(size32_t));
- OwnedHqlExpr isAllTarget = convertAddressToValue(address, boolType);
- OwnedHqlExpr lengthTarget = convertAddressToValue(addressSize, sizetType);
- ITypeInfo * columnType = column->queryType();
- ITypeInfo * elementType = columnType->queryChildType();
- OwnedHqlExpr value = ensureExprType(_value, columnType);
- OwnedHqlExpr inlineSize;
- switch (value->getOperator())
- {
- case no_list:
- if ((value->numChildren() != 0) && ::isFixedSize(elementType))
- inlineSize.setown(getSizetConstant(value->numChildren() * elementType->getSize()));
- break;
- }
- if (inlineSize)
- {
- checkAssignOk(translator, ctx, selector, inlineSize, sizeof(size32_t)+sizeof(bool));
- Owned<IHqlCppSetBuilder> builder = translator.createInlineSetBuilder(elementType, isAllTarget, inlineSize, addressData);
- builder->buildDeclare(ctx);
- translator.buildSetAssign(ctx, builder, value);
- CHqlBoundTarget boundTarget;
- boundTarget.length.set(lengthTarget);
- builder->buildFinish(ctx, boundTarget);
- }
- else
- {
- CHqlBoundExpr bound;
- if ((value->getOperator() == no_list) && value->numChildren())
- {
- CHqlBoundTarget tempTarget;
- translator.createTempFor(ctx, columnType, tempTarget, typemod_none, FormatNatural);
- translator.buildExprAssign(ctx, tempTarget, value);
- bound.setFromTarget(tempTarget);
- }
- else
- translator.buildExpr(ctx, value, bound);
- ensureSimpleLength(translator, ctx, bound);
- OwnedHqlExpr isAll = bound.getIsAll();
- OwnedHqlExpr length = translator.getBoundLength(bound);
- OwnedHqlExpr size = createValue(no_translated, LINK(sizetType), translator.getBoundSize(bound));
- checkAssignOk(translator, ctx, selector, size, sizeof(size32_t)+sizeof(bool));
- translator.assignBoundToTemp(ctx, isAllTarget, isAll);
- translator.assignBoundToTemp(ctx, lengthTarget, length);
- translator.buildBlockCopy(ctx, addressData, bound);
- ensureSimpleLength(translator, ctx, bound);
- OwnedHqlExpr boundSize = translator.getBoundSize(bound);
- associateSizeOf(ctx, selector, boundSize, sizeof(size32_t)+sizeof(bool));
- }
- }
- //---------------------------------------------------------------------------
- IHqlExpression * CMemberInfo::addDatasetLimits(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * _value)
- {
- LinkedHqlExpr value = _value;
- IHqlExpression * choosen = column->queryProperty(choosenAtom);
- if (choosen)
- {
- LinkedHqlExpr choosenValue = choosen->queryChild(0);
- if (!choosenValue->queryValue())
- {
- OwnedHqlExpr self = container->getRelativeSelf();
- OwnedHqlExpr absoluteExpr = replaceSelector(choosenValue, querySelfReference(), self);
- choosenValue.setown(selector->queryRootRow()->bindToRow(absoluteExpr, querySelfReference()));
- }
- else
- {
- if (hasNoMoreRowsThan(value, getIntValue(choosenValue)))
- choosenValue.clear();
- }
- if (choosenValue)
- value.setown(createDataset(no_choosen, LINK(value), LINK(choosenValue)));
- }
- IHqlExpression * maxCount = queryPropertyChild(column, maxCountAtom, 0);
- if (maxCount && !hasNoMoreRowsThan(value, getIntValue(maxCount)))
- {
- //Generate a limit test if there isn't a limit that ensures it is small enough
- StringBuffer failText, columnText;
- expandSelectPathText(columnText, true).toLowerCase();
- failText.appendf("Too many rows assigned to field %s", columnText.str());
- OwnedHqlExpr fail = translator.createFailAction(failText.str(), maxCount, NULL, translator.queryCurrentActivityId(ctx));
- value.setown(createDataset(no_limit, LINK(value), createComma(LINK(maxCount), LINK(fail))));
- }
- return value.getClear();
- }
- bool CMemberInfo::hasDatasetLimits() const
- {
- if (column->queryProperty(choosenAtom))
- return true;
- if (queryPropertyChild(column, maxCountAtom, 0))
- return true;
- return false;
- }
- CChildDatasetColumnInfo::CChildDatasetColumnInfo(CContainerInfo * _container, CMemberInfo * _prior, IHqlExpression * _column, RecordOffsetMap & map, unsigned defaultMaxRecordSize) : CColumnInfo(_container, _prior, _column)
- {
- ColumnToOffsetMap * offsetMap = map.queryMapping(column->queryRecord(), defaultMaxRecordSize);
- maxChildSize = offsetMap->getMaxSize();
- #ifdef _DEBUG
- assertex(!recordRequiresSerialization(column->queryRecord()));
- #endif
- }
- void CChildDatasetColumnInfo::buildColumnExpr(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, CHqlBoundExpr & bound)
- {
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, 0);
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(size32_t));
- bound.length.setown(convertAddressToValue(addressSize, sizetType));
- bound.expr.setown(convertAddressToValue(addressData, queryType()));
- }
- void CChildDatasetColumnInfo::gatherSize(SizeStruct & target)
- {
- addVariableSize(sizeof(size32_t), target);
- }
- void CColumnInfo::buildDeserializeChildLoop(HqlCppTranslator & translator, BuildCtx & loopctx, IReferenceSelector * selector, IHqlExpression * helper)
- {
- OwnedHqlExpr endMarker = loopctx.getTempDeclare(sizetType, NULL);
- HqlExprArray args;
- args.append(*LINK(helper));
- OwnedHqlExpr beginCall = translator.bindTranslatedFunctionCall(deserializerBeginNestedAtom, args);
- loopctx.addAssign(endMarker, beginCall);
- args.append(*LINK(helper));
- args.append(*LINK(endMarker));
- OwnedHqlExpr loopCall = createBoolExpr(no_not, translator.bindTranslatedFunctionCall(deserializerFinishedNestedAtom, args));
- loopctx.addLoop(loopCall, NULL, false);
- }
- void CColumnInfo::buildDeserializeToBuilder(HqlCppTranslator & translator, BuildCtx & ctx, IHqlCppDatasetBuilder * builder, IReferenceSelector * selector, IHqlExpression * helper)
- {
- BuildCtx loopctx(ctx);
- buildDeserializeChildLoop(translator, loopctx, selector, helper);
- BoundRow * selfRow = builder->buildDeserializeRow(loopctx, helper);
- builder->finishRow(loopctx, selfRow);
- }
- void CColumnInfo::buildDeserializeDatasetUsingBuilder(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * helper)
- {
- Owned<IHqlCppDatasetBuilder> builder = translator.createBlockedDatasetBuilder(column->queryRecord());
- builder->buildDeclare(ctx);
- buildDeserializeToBuilder(translator, ctx, builder, selector, helper);
- CHqlBoundExpr bound;
- builder->buildFinish(ctx, bound);
- OwnedHqlExpr translated = bound.getTranslatedExpr();
- setColumn(translator, ctx, selector, translated);
- }
- void CChildDatasetColumnInfo::buildDeserialize(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * helper)
- {
- IHqlExpression * record = column->queryRecord();
- if (recordRequiresSerialization(record))
- {
- buildDeserializeDatasetUsingBuilder(translator, ctx, selector, helper);
- return;
- }
- if (isConditional())
- checkAssignOk(translator, ctx, selector, queryZero(), sizeof(size32_t));
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, 0);
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(size32_t));
- //Read the all flag and the size
- OwnedHqlExpr sizeSizet = getSizetConstant(sizeof(size32_t));
- callDeserializeGetN(translator, ctx, helper, sizeSizet, addressSize);
- OwnedHqlExpr targetSize = convertAddressToValue(addressSize, sizetType);
- OwnedHqlExpr simpleSize = translator.ensureSimpleTranslatedExpr(ctx, targetSize);
- OwnedHqlExpr unboundSize = createTranslated(simpleSize);
- checkAssignOk(translator, ctx, selector, unboundSize, sizeof(size32_t));
- callDeserializeGetN(translator, ctx, helper, simpleSize, addressData);
- OwnedHqlExpr sizeOfExpr = createValue(no_sizeof, LINK(sizetType), LINK(selector->queryExpr()));
- OwnedHqlExpr srcSize = adjustValue(simpleSize, sizeof(size32_t));
- ctx.associateExpr(sizeOfExpr, srcSize);
- }
- bool CChildDatasetColumnInfo::buildReadAhead(HqlCppTranslator & translator, BuildCtx & ctx, ReadAheadState & state)
- {
- OwnedHqlExpr sizeOfDataset = callDeserializerGetSize(translator, ctx, state.helper);
- callDeserializerSkipInputTranslatedSize(translator, ctx, state.helper, sizeOfDataset);
- return true;
- }
- IHqlExpression * CChildDatasetColumnInfo::buildSizeOfUnbound(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector)
- {
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, 0);
- OwnedHqlExpr length = convertAddressToValue(addressSize, sizetType);
- OwnedHqlExpr boundSize = translator.getBoundSize(column->queryType(), length, NULL);
- return createValue(no_translated, LINK(sizetType), adjustValue(boundSize, sizeof(size32_t)));
- }
- void CChildDatasetColumnInfo::setColumn(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * _value)
- {
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, 0);
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(size32_t));
- OwnedHqlExpr lengthTarget = convertAddressToValue(addressSize, sizetType);
- ITypeInfo * columnType = column->queryType();
- OwnedHqlExpr value = LINK(_value); //ensureExprType(_value, columnType);
- ITypeInfo * valueType = value->queryType();
- assertex(recordTypesMatch(valueType, columnType));
- bool assignInline = false; // canEvaluateInline(value); // MORE: What is the test
- // bool assignInline = canAssignInline(&ctx, value) && !canEvaluateInline(&ctx, value);
- value.setown(addDatasetLimits(translator, ctx, selector, value));
- IHqlExpression * record = column->queryRecord();
- if (assignInline)
- {
- OwnedHqlExpr inlineSize = getSizetConstant(0);
- checkAssignOk(translator, ctx, selector, inlineSize, sizeof(size32_t));
- //Can only assign inline if we know the maximum length that will be assigned is 0.
- Owned<IHqlCppDatasetBuilder> builder = translator.createInlineDatasetBuilder(record, inlineSize, addressData);
- builder->buildDeclare(ctx);
- translator.buildDatasetAssign(ctx, builder, value);
- CHqlBoundTarget boundTarget;
- boundTarget.length.set(lengthTarget);
- builder->buildFinish(ctx, boundTarget);
- }
- else
- {
- CHqlBoundExpr bound;
- translator.buildDataset(ctx, value, bound, FormatBlockedDataset);
- translator.normalizeBoundExpr(ctx, bound);
- ensureSimpleLength(translator, ctx, bound);
- OwnedHqlExpr length = translator.getBoundLength(bound);
- OwnedHqlExpr size = createValue(no_translated, LINK(sizetType), translator.getBoundSize(bound));
- checkAssignOk(translator, ctx, selector, size, sizeof(size32_t));
- translator.assignBoundToTemp(ctx, lengthTarget, length);
- translator.buildBlockCopy(ctx, addressData, bound);
- //Use the size just calculated for the field
- OwnedHqlExpr sizeOfExpr = createValue(no_sizeof, LINK(sizetType), LINK(selector->queryExpr()));
- OwnedHqlExpr boundSize = translator.getBoundSize(bound);
- OwnedHqlExpr srcSize = adjustValue(boundSize, sizeof(size32_t));
- ctx.associateExpr(sizeOfExpr, srcSize);
- }
- }
- AColumnInfo * CChildDatasetColumnInfo::lookupColumn(IHqlExpression * search)
- {
- throwError1(HQLERR_LookupNotActiveDataset, search->queryName()->str());
- return NULL;
- }
- //---------------------------------------------------------------------------
- CChildLimitedDatasetColumnInfo::CChildLimitedDatasetColumnInfo(CContainerInfo * _container, CMemberInfo * _prior, IHqlExpression * _column, RecordOffsetMap & map, unsigned defaultMaxRecordSize) : CColumnInfo(_container, _prior, _column)
- {
- IHqlExpression * count = column->queryProperty(countAtom);
- if (count)
- countField.setown(foldHqlExpression(column->queryProperty(countAtom)->queryChild(0)));
- else
- {
- IHqlExpression * size = column->queryProperty(sizeofAtom);
- if (size)
- sizeField.setown(foldHqlExpression(size->queryChild(0)));
- else
- countField.setown(createConstantOne());
- }
- if (countField)
- countField.setown(ensureExprType(countField, sizetType));
- if (sizeField)
- sizeField.setown(ensureExprType(sizeField, sizetType));
- ColumnToOffsetMap * offsetMap = map.queryMapping(column->queryRecord(), defaultMaxRecordSize);
- maxChildSize = offsetMap->getMaxSize();
- fixedChildSize = offsetMap->isFixedWidth() ? maxChildSize : UNKNOWN_LENGTH;
- }
- void CChildLimitedDatasetColumnInfo::buildColumnExpr(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, CHqlBoundExpr & bound)
- {
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), 0);
- if (countField)
- {
- OwnedHqlExpr mappedCount = replaceSelector(countField, querySelfReference(), selector->queryExpr()->queryChild(0));
- CHqlBoundExpr boundCount;
- translator.buildExpr(ctx, mappedCount, boundCount);
- bound.count.set(boundCount.expr);
- }
- else
- {
- OwnedHqlExpr mappedSize = replaceSelector(sizeField, querySelfReference(), selector->queryExpr()->queryChild(0));
- CHqlBoundExpr boundSize;
- translator.buildExpr(ctx, mappedSize, boundSize);
- bound.length.set(boundSize.expr);
- }
- bound.expr.setown(convertAddressToValue(addressData, queryType()));
- }
- void CChildLimitedDatasetColumnInfo::gatherSize(SizeStruct & target)
- {
- if (isFixedSize())
- {
- unsigned fixedSize;
- if (sizeField && sizeField->queryValue())
- fixedSize = (unsigned)getIntValue(sizeField);
- else
- {
- fixedSize = (unsigned)getIntValue(countField) * fixedChildSize;
- }
- if (isConditional())
- addVariableSize(fixedSize, target);
- else
- target.addFixed(fixedSize);
- }
- else
- {
- addVariableSize(0, target);
- }
- }
- IHqlExpression * CChildLimitedDatasetColumnInfo::buildSizeOfUnbound(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector)
- {
- CHqlBoundExpr bound;
- buildColumnExpr(translator, ctx, selector, bound);
- OwnedHqlExpr length = translator.getBoundLength(bound);
- return createTranslated(length);
- }
- bool CChildLimitedDatasetColumnInfo::isFixedSize()
- {
- if (sizeField && sizeField->queryValue())
- return true;
- if (countField && countField->queryValue() && (fixedChildSize != UNKNOWN_LENGTH))
- return true;
- return false; //MORE:
- }
- void CChildLimitedDatasetColumnInfo::buildDeserializeChildLoop(HqlCppTranslator & translator, BuildCtx & loopctx, IReferenceSelector * selector, IHqlExpression * helper)
- {
- OwnedHqlExpr mappedCount = replaceSelector(countField, querySelfReference(), selector->queryExpr()->queryChild(0));
- CHqlBoundExpr bound;
- translator.buildTempExpr(loopctx, mappedCount, bound);
- OwnedHqlExpr test = createValue(no_postdec, LINK(bound.expr));
- loopctx.addLoop(test, NULL, false);
- }
- bool CChildLimitedDatasetColumnInfo::prepareReadAhead(HqlCppTranslator & translator, ReadAheadState & state)
- {
- OwnedHqlExpr self = container->getRelativeSelf();
- if (sizeField)
- {
- OwnedHqlExpr mappedSize = replaceSelector(sizeField, querySelfReference(), self);
- gatherSelectExprs(state.requiredValues, mappedSize);
- }
- else if (countField)
- {
- OwnedHqlExpr mappedCount = replaceSelector(countField, querySelfReference(), self);
- gatherSelectExprs(state.requiredValues, mappedCount);
- }
- return true;
- }
- bool CChildLimitedDatasetColumnInfo::buildReadAhead(HqlCppTranslator & translator, BuildCtx & ctx, ReadAheadState & state)
- {
- try
- {
- OwnedHqlExpr self = container->getRelativeSelf();
- if (sizeField)
- {
- OwnedHqlExpr mappedSize = replaceSelector(sizeField, querySelfReference(), self);
- OwnedHqlExpr replacedSize = quickFullReplaceExpressions(mappedSize, state.requiredValues, state.mappedValues);
- if (containsSelector(replacedSize, queryRootSelf()))
- return false;
- callDeserializerSkipInputSize(translator, ctx, state. helper, replacedSize);
- return true;
- }
- else
- {
- OwnedHqlExpr mappedCount = replaceSelector(countField, querySelfReference(), self);
- OwnedHqlExpr replacedCount = quickFullReplaceExpressions(mappedCount, state.requiredValues, state.mappedValues);
- if (containsSelector(replacedCount, queryRootSelf()))
- return false;
- if (fixedChildSize != UNKNOWN_LENGTH)
- {
- OwnedHqlExpr scaledSize = multiplyValue(replacedCount, fixedChildSize);
- callDeserializerSkipInputSize(translator, ctx, state. helper, scaledSize);
- return true;
- }
- BuildCtx loopctx(ctx);
- CHqlBoundExpr bound;
- translator.buildTempExpr(loopctx, replacedCount, bound);
- OwnedHqlExpr test = createValue(no_postdec, LINK(bound.expr));
- loopctx.addLoop(test, NULL, false);
- StringBuffer prefetcherInstanceName;
- translator.ensureRowPrefetcher(prefetcherInstanceName, ctx, column->queryRecord());
-
- StringBuffer s;
- s.append(prefetcherInstanceName).append("->readAhead(");
- translator.generateExprCpp(s, state.helper).append(");");
- loopctx.addQuoted(s);
- return true;
- }
- }
- catch (IException * e)
- {
- //yuk yuk yuk!! Couldn't resolve the dataset count/size for some strange reason
- e->Release();
- }
- return false;
- }
- void CChildLimitedDatasetColumnInfo::buildDeserialize(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * helper)
- {
- if (sizeField || !countField)
- {
- ctx.addQuoted("rtlFailUnexpected();");
- return;
- }
- //NB: The serialized form of a dataset with an external count is not the same as a normal dataset
- IHqlExpression * record = column->queryRecord();
- if (recordRequiresSerialization(record) || !translator.isFixedRecordSize(record))
- {
- Owned<IHqlCppDatasetBuilder> builder = translator.createBlockedDatasetBuilder(column->queryRecord());
- builder->buildDeclare(ctx);
- buildDeserializeToBuilder(translator, ctx, builder, selector, helper);
- CHqlBoundExpr bound;
- builder->buildFinish(ctx, bound);
- setColumnFromBuilder(translator, ctx, selector, builder);
- }
- else
- CColumnInfo::buildDeserialize(translator, ctx, selector, helper);
- }
- void CChildLimitedDatasetColumnInfo::setColumn(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * value)
- {
- if (sizeField)
- translator.throwError(HQLERR_CannotCreateSizedChildDataset);
- if (countField)
- {
- IHqlExpression * record = column->queryRecord();
- OwnedHqlExpr mappedCount = replaceSelector(countField, querySelfReference(), selector->queryExpr()->queryChild(0));
- Owned<IHqlCppDatasetBuilder> builder = translator.createLimitedDatasetBuilder(record, mappedCount);
- builder->buildDeclare(ctx);
- translator.buildDatasetAssign(ctx, builder, value);
- setColumnFromBuilder(translator, ctx, selector, builder);
- }
- }
- void CChildLimitedDatasetColumnInfo::setColumnFromBuilder(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlCppDatasetBuilder * builder)
- {
- CHqlBoundExpr bound;
- builder->buildFinish(ctx, bound);
- if (bound.length)
- bound.length.setown(translator.ensureSimpleTranslatedExpr(ctx, bound.length));
- OwnedHqlExpr size = createValue(no_translated, LINK(sizetType), translator.getBoundSize(bound));
- checkAssignOk(translator, ctx, selector, size, 0);
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), 0);
- translator.buildBlockCopy(ctx, addressData, bound);
- //Use the size just calculated for the field
- OwnedHqlExpr sizeOfExpr = createValue(no_sizeof, LINK(sizetType), LINK(selector->queryExpr()));
- OwnedHqlExpr srcSize = translator.getBoundSize(bound);
- ctx.associateExpr(sizeOfExpr, srcSize);
- }
- AColumnInfo * CChildLimitedDatasetColumnInfo::lookupColumn(IHqlExpression * search)
- {
- throwError1(HQLERR_LookupNotActiveDataset, search->queryName()->str());
- return NULL;
- }
- //--------------------------------------------------------------------------------------------
- CChildLinkedDatasetColumnInfo::CChildLinkedDatasetColumnInfo(CContainerInfo * _container, CMemberInfo * _prior, IHqlExpression * _column, RecordOffsetMap & map, unsigned defaultMaxRecordSize) : CColumnInfo(_container, _prior, _column)
- {
- ColumnToOffsetMap * offsetMap = map.queryMapping(column->queryRecord(), defaultMaxRecordSize);
- maxChildSize = offsetMap->getMaxSize();
- }
- void CChildLinkedDatasetColumnInfo::buildColumnExpr(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, CHqlBoundExpr & bound)
- {
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, 0);
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(size32_t));
- bound.count.setown(convertAddressToValue(addressSize, sizetType));
- bound.expr.setown(convertAddressToValue(addressData, queryType()));
- }
- void CChildLinkedDatasetColumnInfo::gatherSize(SizeStruct & target)
- {
- unsigned thisSize = sizeof(size32_t) + sizeof(byte * *);
- if (isConditional())
- addVariableSize(thisSize, target); // the size is used for ensure if condition is true
- else
- target.addFixed(thisSize);
- }
- IHqlExpression * CChildLinkedDatasetColumnInfo::buildSizeOfUnbound(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector)
- {
- return getSizetConstant(sizeof(size32_t) + sizeof(byte * *));
- }
- void CChildLinkedDatasetColumnInfo::buildDeserialize(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * helper)
- {
- if (isConditional())
- checkAssignOk(translator, ctx, selector, queryZero(), sizeof(size32_t) + sizeof(byte * *));
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, 0);
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(size32_t));
- IHqlExpression * record = column->queryRecord();
- CHqlBoundTarget boundTarget;
- boundTarget.count.setown(convertAddressToValue(addressSize, sizetType));
- boundTarget.expr.setown(convertAddressToValue(addressData, queryType()));
- HqlExprArray args;
- args.append(*translator.createRowSerializer(ctx, record, deserializerAtom));
- args.append(*LINK(helper));
- OwnedHqlExpr call = translator.bindFunctionCall(deserializerRowsetHelperAtom, args, queryType());
- translator.buildExprAssign(ctx, boundTarget, call);
- }
- bool CChildLinkedDatasetColumnInfo::buildReadAhead(HqlCppTranslator & translator, BuildCtx & ctx, ReadAheadState & state)
- {
- OwnedHqlExpr sizeOfDataset = callDeserializerGetSize(translator, ctx, state.helper);
- callDeserializerSkipInputTranslatedSize(translator, ctx, state.helper, sizeOfDataset);
- return true;
- }
- void CChildLinkedDatasetColumnInfo::buildSerialize(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * helper)
- {
- IHqlExpression * record = column->queryRecord();
- HqlExprArray args;
- args.append(*LINK(helper));
- args.append(*translator.createRowSerializer(ctx, record, serializerAtom));
- args.append(*LINK(selector->queryExpr()));
- OwnedHqlExpr call = translator.bindTranslatedFunctionCall(serializerRowsetHelperAtom, args);
- translator.buildStmt(ctx, call);
- }
- bool CChildLinkedDatasetColumnInfo::modifyColumn(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * value, node_operator op)
- {
- if (hasDatasetLimits() || (op != no_assign_addfiles))
- return false;
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, 0);
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(size32_t));
- ITypeInfo * resultType = queryType();
- ITypeInfo * valueType = value->queryType();
- assertex(recordTypesMatch(valueType, resultType));
- CHqlBoundTarget boundTarget;
- boundTarget.count.setown(convertAddressToValue(addressSize, sizetType));
- boundTarget.expr.setown(convertAddressToValue(addressData, queryType()));
- HqlExprArray args;
- args.append(*LINK(value));
- OwnedHqlExpr call = translator.bindFunctionCall(appendRowsToRowsetAtom, args, resultType);
- translator.buildDatasetAssign(ctx, boundTarget, call);
- return true;
- }
- void CChildLinkedDatasetColumnInfo::setColumn(HqlCppTranslator & translator, BuildCtx & ctx, IReferenceSelector * selector, IHqlExpression * _value)
- {
- OwnedHqlExpr addressSize = getColumnAddress(translator, ctx, selector, sizetType, 0);
- OwnedHqlExpr addressData = getColumnAddress(translator, ctx, selector, queryType(), sizeof(size32_t));
- ITypeInfo * resultType = queryType();
- LinkedHqlExpr value = _value;
- ITypeInfo * valueType = value->queryType();
- assertex(recordTypesMatch(valueType, resultType));
- value.setown(addDatasetLimits(translator, ctx, selector, value));
- CHqlBoundTarget boundTarget;
- boundTarget.count.setown(convertAddressToValue(addressSize, sizetType));
- boundTarget.expr.setown(convertAddressToValue(addressData, queryType()));
- if (value->getOperator() == no_null)
- value.setown(createNullExpr(resultType));
-
- translator.buildDatasetAssign(ctx, boundTarget, value);
- }
- AColumnInfo * CChildLinkedDatasetColumnInfo::lookupColumn(IHqlExpression * search)
- {
- throwError1(HQLERR_LookupNotActiveDataset, search->queryName()->str());
- return NULL;
- }
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