use of org.datanucleus.store.rdbms.sql.expression.BooleanExpression in project datanucleus-rdbms by datanucleus.
the class MapContainsValueMethod method getExpression.
/* (non-Javadoc)
* @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
*/
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
if (args == null || args.size() == 0 || args.size() > 1) {
throw new NucleusException(Localiser.msg("060016", "containsValue", "MapExpression", 1));
}
MapExpression mapExpr = (MapExpression) expr;
SQLExpression valExpr = args.get(0);
if (valExpr.isParameter()) {
// Value is a parameter so make sure its type is set
AbstractMemberMetaData mmd = mapExpr.getJavaTypeMapping().getMemberMetaData();
if (mmd != null && mmd.getMap() != null) {
Class valCls = stmt.getQueryGenerator().getClassLoaderResolver().classForName(mmd.getMap().getValueType());
stmt.getQueryGenerator().bindParameter(valExpr.getParameterName(), valCls);
}
}
ClassLoaderResolver clr = stmt.getQueryGenerator().getClassLoaderResolver();
SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
if (mapExpr instanceof MapLiteral) {
MapLiteral lit = (MapLiteral) mapExpr;
Map map = (Map) lit.getValue();
JavaTypeMapping m = exprFactory.getMappingForType(boolean.class, true);
if (map == null || map.size() == 0) {
return exprFactory.newLiteral(stmt, m, true).eq(exprFactory.newLiteral(stmt, m, false));
}
boolean useInExpression = false;
List<SQLExpression> mapValExprs = lit.getValueLiteral().getValueExpressions();
if (mapValExprs != null && !mapValExprs.isEmpty()) {
// Make sure the the map key(s) are compatible with the keyExpr
boolean incompatible = true;
Class elemtype = clr.classForName(valExpr.getJavaTypeMapping().getType());
Iterator<SQLExpression> mapKeyExprIter = mapValExprs.iterator();
while (mapKeyExprIter.hasNext()) {
SQLExpression mapKeyExpr = mapKeyExprIter.next();
Class mapKeyType = clr.classForName(mapKeyExpr.getJavaTypeMapping().getType());
if (valueTypeCompatible(elemtype, mapKeyType)) {
incompatible = false;
break;
}
}
if (incompatible) {
// The provided element type isn't assignable to any of the input collection elements!
return exprFactory.newLiteral(stmt, m, true).eq(exprFactory.newLiteral(stmt, m, false));
}
// Check if we should compare using an "IN (...)" expression
SQLExpression mapKeyExpr = mapValExprs.get(0);
if (mapKeyExpr instanceof StringExpression || mapKeyExpr instanceof NumericExpression || mapKeyExpr instanceof TemporalExpression || mapKeyExpr instanceof CharacterExpression || mapKeyExpr instanceof EnumExpression) {
useInExpression = true;
}
}
if (useInExpression) {
// Return "key IN (val1, val2, ...)"
SQLExpression[] exprs = (mapValExprs != null ? mapValExprs.toArray(new SQLExpression[mapValExprs.size()]) : null);
return new InExpression(valExpr, exprs);
}
// TODO If valExpr is a parameter and mapExpr is derived from a parameter ?
MapValueLiteral mapValueLiteral = lit.getValueLiteral();
BooleanExpression bExpr = null;
List<SQLExpression> elementExprs = mapValueLiteral.getValueExpressions();
for (int i = 0; i < elementExprs.size(); i++) {
if (bExpr == null) {
bExpr = (elementExprs.get(i)).eq(valExpr);
} else {
bExpr = bExpr.ior((elementExprs.get(i)).eq(valExpr));
}
}
if (bExpr != null) {
bExpr.encloseInParentheses();
}
return bExpr;
}
if (stmt.getQueryGenerator().getCompilationComponent() == CompilationComponent.FILTER) {
boolean useSubquery = getNeedsSubquery(stmt);
JoinType joinType = JoinType.INNER_JOIN;
if (valExpr instanceof UnboundExpression) {
// See if the user has defined what should be used
String varName = ((UnboundExpression) valExpr).getVariableName();
String extensionName = "datanucleus.query.jdoql." + varName + ".join";
String extensionValue = (String) stmt.getQueryGenerator().getValueForExtension(extensionName);
if (extensionValue != null) {
if (extensionValue.equalsIgnoreCase("SUBQUERY")) {
useSubquery = true;
} else if (extensionValue.equalsIgnoreCase("INNERJOIN")) {
useSubquery = false;
} else if (extensionValue.equalsIgnoreCase("LEFTOUTERJOIN")) {
joinType = JoinType.LEFT_OUTER_JOIN;
}
}
}
// TODO Check if *this* "containsValue" is negated, not any of them (and remove above check)
if (useSubquery) {
return containsAsSubquery(stmt, mapExpr, valExpr);
}
return containsAsJoin(stmt, mapExpr, valExpr, joinType);
}
return containsAsSubquery(stmt, mapExpr, valExpr);
}
use of org.datanucleus.store.rdbms.sql.expression.BooleanExpression in project datanucleus-rdbms by datanucleus.
the class SQLBooleanMethod method getExpression.
/* (non-Javadoc)
* @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
*/
public SQLExpression getExpression(SQLStatement stmt, SQLExpression ignore, List<SQLExpression> args) {
if (args == null || args.size() != 1) {
throw new NucleusUserException("Cannot invoke SQL_boolean() without a string argument");
}
SQLExpression expr = args.get(0);
if (!(expr instanceof StringLiteral)) {
throw new NucleusUserException("Cannot use SQL_boolean() without string argument");
}
String sql = (String) ((StringLiteral) expr).getValue();
JavaTypeMapping m = stmt.getSQLExpressionFactory().getMappingForType(boolean.class, false);
BooleanExpression retExpr = new BooleanExpression(stmt, m, sql);
return retExpr;
}
use of org.datanucleus.store.rdbms.sql.expression.BooleanExpression in project datanucleus-rdbms by datanucleus.
the class StringStartsWith2Method method getExpression.
/* (non-Javadoc)
* @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
*/
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
if (args == null || args.size() == 0 || args.size() > 2) {
throw new NucleusException(Localiser.msg("060003", "startsWith", "StringExpression", 0, "StringExpression/CharacterExpression/Parameter"));
}
// {stringExpr}.indexOf(strExpr1 [,numExpr2])
SQLExpression one = ExpressionUtils.getLiteralForOne(stmt);
ArrayList funcArgs = new ArrayList();
SQLExpression substrExpr = args.get(0);
if (!(substrExpr instanceof StringExpression) && !(substrExpr instanceof CharacterExpression) && !(substrExpr instanceof ParameterLiteral)) {
throw new NucleusException(Localiser.msg("060003", "startsWith", "StringExpression", 0, "StringExpression/CharacterExpression/Parameter"));
}
if (args.size() == 2) {
NumericExpression numExpr = (NumericExpression) args.get(1);
funcArgs.add(substrExpr);
funcArgs.add(expr);
return new BooleanExpression(new StringExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class), "CHARINDEX", funcArgs), Expression.OP_EQ, one.add(numExpr));
}
funcArgs.add(substrExpr);
funcArgs.add(expr);
return new BooleanExpression(new StringExpression(stmt, stmt.getSQLExpressionFactory().getMappingForType(int.class), "CHARINDEX", funcArgs), Expression.OP_EQ, one);
}
use of org.datanucleus.store.rdbms.sql.expression.BooleanExpression in project datanucleus-rdbms by datanucleus.
the class CollectionContainsMethod method getExpression.
/* (non-Javadoc)
* @see org.datanucleus.store.rdbms.sql.method.SQLMethod#getExpression(org.datanucleus.store.rdbms.sql.expression.SQLExpression, java.util.List)
*/
public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args) {
if (args == null || args.size() == 0 || args.size() > 1) {
throw new NucleusException(Localiser.msg("060016", "contains", "CollectionExpression", 1));
}
CollectionExpression collExpr = (CollectionExpression) expr;
AbstractMemberMetaData mmd = collExpr.getJavaTypeMapping().getMemberMetaData();
SQLExpression elemExpr = args.get(0);
SQLExpressionFactory exprFactory = stmt.getSQLExpressionFactory();
if (elemExpr.isParameter()) {
// Element is a parameter so make sure its type is set
if (mmd != null && mmd.getCollection() != null) {
Class elementCls = stmt.getQueryGenerator().getClassLoaderResolver().classForName(mmd.getCollection().getElementType());
stmt.getQueryGenerator().bindParameter(elemExpr.getParameterName(), elementCls);
}
}
ClassLoaderResolver clr = stmt.getQueryGenerator().getClassLoaderResolver();
if (collExpr instanceof CollectionLiteral) {
// Literal collection
CollectionLiteral lit = (CollectionLiteral) collExpr;
Collection coll = (Collection) lit.getValue();
JavaTypeMapping m = exprFactory.getMappingForType(boolean.class, true);
if (coll == null || coll.isEmpty()) {
return exprFactory.newLiteral(stmt, m, true).eq(exprFactory.newLiteral(stmt, m, false));
}
if (collExpr.isParameter()) {
stmt.getQueryGenerator().useParameterExpressionAsLiteral((CollectionLiteral) collExpr);
}
boolean useInExpression = false;
List<SQLExpression> collElementExprs = lit.getElementExpressions();
if (collElementExprs != null && !collElementExprs.isEmpty()) {
// Make sure the the collection element(s) are compatible with the elemExpr
boolean incompatible = true;
Class elemtype = clr.classForName(elemExpr.getJavaTypeMapping().getType());
Iterator<SQLExpression> collElementExprIter = collElementExprs.iterator();
while (collElementExprIter.hasNext()) {
SQLExpression collElementExpr = collElementExprIter.next();
Class collElemType = clr.classForName(collElementExpr.getJavaTypeMapping().getType());
if (elementTypeCompatible(elemtype, collElemType)) {
incompatible = false;
break;
}
}
if (incompatible) {
// The provided element type isn't assignable to any of the input collection elements!
return exprFactory.newLiteral(stmt, m, true).eq(exprFactory.newLiteral(stmt, m, false));
}
// Check if we should compare using an "IN (...)" expression
SQLExpression collElementExpr = collElementExprs.get(0);
if (collElementExpr instanceof StringExpression || collElementExpr instanceof NumericExpression || collElementExpr instanceof TemporalExpression || collElementExpr instanceof CharacterExpression || collElementExpr instanceof EnumExpression) {
useInExpression = true;
}
}
if (useInExpression) {
// Return "elem IN (val1, val2, ...)"
SQLExpression[] exprs = (collElementExprs != null ? collElementExprs.toArray(new SQLExpression[collElementExprs.size()]) : null);
return new InExpression(elemExpr, exprs);
}
// Return "elem == val1 || elem == val2 || elem == val3 ..."
BooleanExpression bExpr = null;
if (collElementExprs != null) {
for (int i = 0; i < collElementExprs.size(); i++) {
if (bExpr == null) {
bExpr = (collElementExprs.get(i)).eq(elemExpr);
} else {
bExpr = bExpr.ior((collElementExprs.get(i)).eq(elemExpr));
}
}
}
if (bExpr != null) {
bExpr.encloseInParentheses();
}
return bExpr;
}
if (mmd == null) {
throw new NucleusUserException("Cannot perform Collection.contains when the field metadata is not provided");
}
if (mmd.isSerialized()) {
throw new NucleusUserException("Cannot perform Collection.contains when the collection is being serialised");
}
ApiAdapter api = stmt.getRDBMSManager().getApiAdapter();
Class elementType = clr.classForName(mmd.getCollection().getElementType());
if (!api.isPersistable(elementType) && mmd.getJoinMetaData() == null) {
throw new NucleusUserException("Cannot perform Collection.contains when the collection<Non-Persistable> is not in a join table");
}
if (stmt.getQueryGenerator().getCompilationComponent() == CompilationComponent.FILTER) {
boolean useSubquery = getNeedsSubquery(stmt, collExpr, elemExpr);
JoinType joinType = JoinType.INNER_JOIN;
if (elemExpr instanceof UnboundExpression) {
// See if the user has defined what should be used
String varName = ((UnboundExpression) elemExpr).getVariableName();
String extensionName = "datanucleus.query.jdoql." + varName + ".join";
String extensionValue = (String) stmt.getQueryGenerator().getValueForExtension(extensionName);
if (extensionValue != null) {
if (extensionValue.equalsIgnoreCase("SUBQUERY")) {
useSubquery = true;
} else if (extensionValue.equalsIgnoreCase("INNERJOIN")) {
useSubquery = false;
} else if (extensionValue.equalsIgnoreCase("LEFTOUTERJOIN")) {
joinType = JoinType.LEFT_OUTER_JOIN;
}
}
}
if (useSubquery) {
return containsAsSubquery(stmt, collExpr, elemExpr);
}
return containsAsJoin(stmt, collExpr, elemExpr, joinType);
}
return containsAsSubquery(stmt, collExpr, elemExpr);
}
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