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com.dream.system.antlr.handler.non.ConditionHandler Maven / Gradle / Ivy
package com.dream.system.antlr.handler.non;
import com.dream.antlr.config.Assist;
import com.dream.antlr.exception.AntlrException;
import com.dream.antlr.handler.AbstractHandler;
import com.dream.antlr.invoker.Invoker;
import com.dream.antlr.smt.ConditionStatement;
import com.dream.antlr.smt.OperStatement;
import com.dream.antlr.smt.Statement;
import com.dream.antlr.smt.SymbolStatement;
import com.dream.antlr.sql.ToSQL;
import com.dream.antlr.util.ExprUtil;
import java.util.List;
public class ConditionHandler extends AbstractHandler {
@Override
protected Statement handlerBefore(Statement statement, Assist assist, ToSQL toSQL, List invokerList, int life) throws AntlrException {
ConditionStatement conditionStatement = (ConditionStatement) statement;
Statement leftStatement = conditionStatement.getLeft();
String vl, vr;
OperStatement operStatement = conditionStatement.getOper();
Statement rightStatement = conditionStatement.getRight();
switch (operStatement.getNameId()) {
case 812960120://"ANDStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vl) && ExprUtil.isEmpty(vr)) {
return null;
} else if (ExprUtil.isEmpty(vl)) {
return new SymbolStatement.LetterStatement(vr);
} else if (ExprUtil.isEmpty(vr)) {
return new SymbolStatement.LetterStatement(vl);
} else {
return new SymbolStatement.LetterStatement(vl + " AND " + vr);
}
case 759344844://"ORStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vl) && ExprUtil.isEmpty(vr)) {
return null;
} else if (ExprUtil.isEmpty(vl)) {
return new SymbolStatement.LetterStatement(vr);
} else if (ExprUtil.isEmpty(vr)) {
return new SymbolStatement.LetterStatement(vl);
} else {
return new SymbolStatement.LetterStatement(vl + " OR " + vr);
}
case 1462204615://"LTStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vr)) {
return null;
} else {
return new SymbolStatement.LetterStatement(vl + "<" + vr);
}
case -1329112489://"LEQStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vr)) {
return null;
} else {
return new SymbolStatement.LetterStatement(vl + "<=" + vr);
}
case 1857026818://"GTStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vr)) {
return null;
} else {
return new SymbolStatement.LetterStatement(vl + ">" + vr);
}
case -1974526084://"GEQStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vr)) {
return null;
} else {
return new SymbolStatement.LetterStatement(vl + ">=" + vr);
}
case 1745502755://"EQStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vr)) {
return null;
} else {
return new SymbolStatement.LetterStatement(vl + "=" + vr);
}
case -1070947051://"NEQStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vr)) {
return null;
} else {
return new SymbolStatement.LetterStatement(vl + "<>" + vr);
}
case 1921203096://"LIKEStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vr)) {
return null;
} else {
return new SymbolStatement.LetterStatement(vl + " LIKE " + vr);
}
case -557794870://"INStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
vr = toSQL.toStr(rightStatement, assist, invokerList);
if (ExprUtil.isEmpty(vr)) {
return null;
} else {
return new SymbolStatement.LetterStatement(vl + " IN" + vr);
}
case 689682023://"BETWEENStatement"
vl = toSQL.toStr(leftStatement, assist, invokerList);
ConditionStatement rightConditionStatement = (ConditionStatement) rightStatement;
Statement rightLeftStatement = rightConditionStatement.getLeft();
Statement rightRightStatement = rightConditionStatement.getRight();
String rightLeft = toSQL.toStr(rightLeftStatement, assist, invokerList);
String rightRight = toSQL.toStr(rightRightStatement, assist, invokerList);
if (ExprUtil.isEmpty(rightLeft) && ExprUtil.isEmpty(rightRight)) {
return null;
}
if (ExprUtil.isEmpty(rightLeft)) {
return new SymbolStatement.LetterStatement(vl + "<=" + rightRight);
} else if (ExprUtil.isEmpty(rightRight)) {
return new SymbolStatement.LetterStatement(vl + ">=" + rightLeft);
} else {
return new SymbolStatement.LetterStatement(vl + " BETWEEN " + rightLeft + " AND " + rightRight);
}
default:
return statement;
}
}
@Override
protected boolean interest(Statement statement, Assist assist) {
return statement instanceof ConditionStatement;
}
}
