Java Code Examples for com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr#getRight()
The following examples show how to use
com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr#getRight() .
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Example 1
| Source File: WhereParser.java From elasticsearch-sql with Apache License 2.0 | 6 votes |
|
private boolean explanSpecialCondWithBothSidesAreLiterals(SQLBinaryOpExpr bExpr, Where where) throws SqlParseException {
if ((bExpr.getLeft() instanceof SQLNumericLiteralExpr || bExpr.getLeft() instanceof SQLCharExpr) &&
(bExpr.getRight() instanceof SQLNumericLiteralExpr || bExpr.getRight() instanceof SQLCharExpr)
) {
SQLMethodInvokeExpr sqlMethodInvokeExpr = new SQLMethodInvokeExpr("script", null);
String operator = bExpr.getOperator().getName();
if (operator.equals("=")) {
operator = "==";
}
sqlMethodInvokeExpr.addParameter(
new SQLCharExpr(Util.expr2Object(bExpr.getLeft(), "'") +
" " + operator + " " +
Util.expr2Object(bExpr.getRight(), "'"))
);
explanCond("AND", sqlMethodInvokeExpr, where);
return true;
}
return false;
}
Example 2
| Source File: DruidSelectParser.java From Mycat2 with GNU General Public License v3.0 | 5 votes |
|
private HavingCols buildGroupByHaving(SQLExpr having,Map<String, String> aliaColumns ){
if (having == null) {
return null;
}
SQLBinaryOpExpr expr = ((SQLBinaryOpExpr) having);
SQLExpr left = expr.getLeft();
SQLBinaryOperator operator = expr.getOperator();
SQLExpr right = expr.getRight();
String leftValue = null;;
if (left instanceof SQLAggregateExpr) {
leftValue = ((SQLAggregateExpr) left).getMethodName() + "("
+ ((SQLAggregateExpr) left).getArguments().get(0) + ")";
String aggrColumnAlias = getAliaColumn(aliaColumns,leftValue);
if(aggrColumnAlias != null) { // having聚合函数存在别名
expr.setLeft(new SQLIdentifierExpr(aggrColumnAlias));
leftValue = aggrColumnAlias;
}
} else if (left instanceof SQLIdentifierExpr) {
leftValue = ((SQLIdentifierExpr) left).getName();
}
String rightValue = null;
if (right instanceof SQLNumericLiteralExpr) {
rightValue = right.toString();
}else if(right instanceof SQLTextLiteralExpr){
rightValue = StringUtil.removeBackquote(right.toString());
}
return new HavingCols(leftValue,rightValue,operator.getName());
}
Example 3
| Source File: DruidSelectOracleParser.java From Mycat2 with GNU General Public License v3.0 | 5 votes |
|
private void parseThreeLevelPageSql(SQLStatement stmt, RouteResultset rrs, SchemaConfig schema, SQLSubqueryTableSource from, SQLBinaryOpExpr one, SQLBinaryOperator operator)
{
SQLIntegerExpr right = (SQLIntegerExpr) one.getRight();
int firstrownum = right.getNumber().intValue();
if (operator == SQLBinaryOperator.GreaterThanOrEqual&&firstrownum!=0) {
firstrownum = firstrownum - 1;
}
SQLSelectQuery subSelect = from.getSelect().getQuery();
if (subSelect instanceof OracleSelectQueryBlock)
{ //第二层子查询
OracleSelectQueryBlock twoSubSelect = (OracleSelectQueryBlock) subSelect;
if (twoSubSelect.getWhere() instanceof SQLBinaryOpExpr && twoSubSelect.getFrom() instanceof SQLSubqueryTableSource)
{
SQLBinaryOpExpr twoWhere = (SQLBinaryOpExpr) twoSubSelect.getWhere();
boolean isRowNum = "rownum".equalsIgnoreCase(twoWhere.getLeft().toString());
boolean isLess = twoWhere.getOperator() == SQLBinaryOperator.LessThanOrEqual || twoWhere.getOperator() == SQLBinaryOperator.LessThan;
if (isRowNum && twoWhere.getRight() instanceof SQLIntegerExpr && isLess)
{
int lastrownum = ((SQLIntegerExpr) twoWhere.getRight()).getNumber().intValue();
if (operator == SQLBinaryOperator.LessThan&&lastrownum!=0) {
lastrownum = lastrownum - 1;
}
SQLSelectQuery finalQuery = ((SQLSubqueryTableSource) twoSubSelect.getFrom()).getSelect().getQuery();
if (finalQuery instanceof OracleSelectQueryBlock)
{
setLimitIFChange(stmt, rrs, schema, one, firstrownum, lastrownum);
parseOrderAggGroupOracle(stmt,rrs, (OracleSelectQueryBlock) finalQuery, schema);
isNeedParseOrderAgg=false;
}
}
}
}
}
Example 4
| Source File: ExpressionUtil.java From dble with GNU General Public License v2.0 | 5 votes |
|
/**
* (A OR B) AND C OR B OR (E OR F) AND G = ((A AND C ) OR (A AND B)) OR B OR
* ((E AND G) OR (F AND G))
*
* @param expr
* @return
*/
private static SQLBinaryOpExpr expandOrExpression(SQLBinaryOpExpr expr) {
SQLExpr left = expr.getLeft();
SQLExpr right = expr.getRight();
SQLExpr leftOp = toDNF(left);
SQLExpr rightOp = toDNF(right);
return new SQLBinaryOpExpr(leftOp, SQLBinaryOperator.BooleanOr, rightOp);
}
Example 5
| Source File: ExpressionUtil.java From dble with GNU General Public License v2.0 | 5 votes |
|
/**
* allow (A and B) and C
*
* @param expr
* @return
*/
public static boolean isDNF(SQLExpr expr) {
if (!isLogicalExpression(expr)) {
return true;
}
SQLBinaryOpExpr binOpExpr = (SQLBinaryOpExpr) expr;
SQLExpr left = binOpExpr.getLeft();
SQLExpr right = binOpExpr.getRight();
if (binOpExpr.getOperator() == SQLBinaryOperator.BooleanAnd) {
boolean isAllNonLogicExpr = true;
if (left instanceof SQLBinaryOpExpr) {
SQLBinaryOpExpr leftBinaryOp = (SQLBinaryOpExpr) left;
if (leftBinaryOp.getOperator() == SQLBinaryOperator.BooleanOr) {
return false;
}
if (isLogicalExpression(leftBinaryOp)) {
isAllNonLogicExpr = false;
}
}
if (right instanceof SQLBinaryOpExpr) {
SQLBinaryOpExpr rightBinaryOp = (SQLBinaryOpExpr) right;
if (rightBinaryOp.getOperator() == SQLBinaryOperator.BooleanOr) {
return false;
}
if (isLogicalExpression(rightBinaryOp)) {
isAllNonLogicExpr = false;
}
}
if (isAllNonLogicExpr) {
return true;
}
}
if (!isDNF(left)) {
return false;
}
return isDNF(right);
}
Example 6
| Source File: WhereParser.java From elasticsearch-sql with Apache License 2.0 | 5 votes |
|
private boolean explanSpecialCondWithBothSidesAreProperty(SQLBinaryOpExpr bExpr, Where where) throws SqlParseException {
//join is not support
if ((bExpr.getLeft() instanceof SQLPropertyExpr || bExpr.getLeft() instanceof SQLIdentifierExpr) &&
(bExpr.getRight() instanceof SQLPropertyExpr || bExpr.getRight() instanceof SQLIdentifierExpr) &&
Sets.newHashSet("=", "<", ">", ">=", "<=","<>","!=").contains(bExpr.getOperator().getName()) &&
!Util.isFromJoinOrUnionTable(bExpr)
) {
SQLMethodInvokeExpr sqlMethodInvokeExpr = new SQLMethodInvokeExpr("script", null);
String operator = bExpr.getOperator().getName();
if (operator.equals("=")) {
operator = "==";
}else
if (operator.equals("<>")) {
operator = "!=";
}
String leftProperty = Util.expr2Object(bExpr.getLeft()).toString();
String rightProperty = Util.expr2Object(bExpr.getRight()).toString();
if (leftProperty.split("\\.").length > 1) {
leftProperty = leftProperty.substring(leftProperty.split("\\.")[0].length() + 1);
}
if (rightProperty.split("\\.").length > 1) {
rightProperty = rightProperty.substring(rightProperty.split("\\.")[0].length() + 1);
}
sqlMethodInvokeExpr.addParameter(new SQLCharExpr(
"doc['" + leftProperty + "'].value " +
operator +
" doc['" + rightProperty + "'].value"));
explanCond("AND", sqlMethodInvokeExpr, where);
return true;
}
return false;
}
Example 7
| Source File: ScriptFilter.java From elasticsearch-sql with Apache License 2.0 | 5 votes |
|
public boolean tryParseFromMethodExpr(SQLMethodInvokeExpr expr) throws SqlParseException {
if (!expr.getMethodName().toLowerCase().equals("script")) {
return false;
}
List<SQLExpr> methodParameters = expr.getParameters();
if (methodParameters.size() == 0) {
return false;
}
script = Util.extendedToString(methodParameters.get(0));
if (methodParameters.size() == 1) {
return true;
}
args = new HashMap<>();
for (int i = 1; i < methodParameters.size(); i++) {
SQLExpr innerExpr = methodParameters.get(i);
if (!(innerExpr instanceof SQLBinaryOpExpr)) {
return false;
}
SQLBinaryOpExpr binaryOpExpr = (SQLBinaryOpExpr) innerExpr;
if (!binaryOpExpr.getOperator().getName().equals("=")) {
return false;
}
SQLExpr right = binaryOpExpr.getRight();
Object value = Util.expr2Object(right);
String key = Util.extendedToString(binaryOpExpr.getLeft());
if(key.equals("script_type")){
parseAndUpdateScriptType(value.toString());
}
else {
args.put(key, value);
}
}
return true;
}
Example 8
| Source File: WhereParser.java From elasticsearch-sql with Apache License 2.0 | 4 votes |
|
private SQLMethodInvokeExpr parseSQLBinaryOpExprWhoIsConditionInWhere(SQLBinaryOpExpr soExpr) throws SqlParseException {
if (!(soExpr.getLeft() instanceof SQLCastExpr || soExpr.getRight() instanceof SQLCastExpr)) {
if (!(soExpr.getLeft() instanceof SQLMethodInvokeExpr ||
soExpr.getRight() instanceof SQLMethodInvokeExpr)) {
return null;
}
if (soExpr.getLeft() instanceof SQLMethodInvokeExpr) {
if (!SQLFunctions.buildInFunctions.contains(((SQLMethodInvokeExpr) soExpr.getLeft()).getMethodName())) {
return null;
}
}
if (soExpr.getRight() instanceof SQLMethodInvokeExpr) {
if (!SQLFunctions.buildInFunctions.contains(((SQLMethodInvokeExpr) soExpr.getRight()).getMethodName())) {
return null;
}
}
}
MethodField leftMethod = new MethodField(null, Lists.newArrayList(new KVValue("", Util.expr2Object(soExpr.getLeft(), "'"))), null, null);
if (soExpr.getLeft() instanceof SQLIdentifierExpr || soExpr.getLeft() instanceof SQLPropertyExpr) {
leftMethod = new MethodField(null, Lists.newArrayList(new KVValue("", "doc['" + Util.expr2Object(soExpr.getLeft(), "'") + "'].value")), null, null);
} else if (soExpr.getLeft() instanceof SQLMethodInvokeExpr) {
leftMethod = parseSQLMethodInvokeExprWithFunctionInWhere((SQLMethodInvokeExpr) soExpr.getLeft());
} else if (soExpr.getLeft() instanceof SQLCastExpr) {
leftMethod = parseSQLCastExprInWhere((SQLCastExpr) soExpr.getLeft());
}
MethodField rightMethod = new MethodField(null, Lists.newArrayList(new KVValue("", Util.expr2Object(soExpr.getRight(), "'"))), null, null);
if (soExpr.getRight() instanceof SQLIdentifierExpr || soExpr.getRight() instanceof SQLPropertyExpr) {
rightMethod = new MethodField(null, Lists.newArrayList(new KVValue("", "doc['" + Util.expr2Object(soExpr.getRight(), "'") + "'].value")), null, null);
} else if (soExpr.getRight() instanceof SQLMethodInvokeExpr) {
rightMethod = parseSQLMethodInvokeExprWithFunctionInWhere((SQLMethodInvokeExpr) soExpr.getRight());
} else if (soExpr.getRight() instanceof SQLCastExpr) {
rightMethod = parseSQLCastExprInWhere((SQLCastExpr) soExpr.getRight());
}
String v1 = leftMethod.getParams().get(0).value.toString();
String v1Dec = leftMethod.getParams().size() == 2 ? leftMethod.getParams().get(1).value.toString() + ";" : "";
String v2 = rightMethod.getParams().get(0).value.toString();
String v2Dec = rightMethod.getParams().size() == 2 ? rightMethod.getParams().get(1).value.toString() + ";" : "";
String operator = soExpr.getOperator().getName();
if ("=".equals(operator)) {
operator = "==";
}
String finalStr = String.format("%s%s((Comparable)%s).compareTo(%s) %s 0", v1Dec, v2Dec, v1, v2, operator);
SQLMethodInvokeExpr scriptMethod = new SQLMethodInvokeExpr("script", null);
scriptMethod.addParameter(new SQLCharExpr(finalStr));
return scriptMethod;
}
