How to use SqlNullLiteralValue class of org.evomaster.dbconstraint.ast package

Best EvoMaster code snippet using org.evomaster.dbconstraint.ast.SqlNullLiteralValue

Source:SqlConditionTranslator.java Github

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...15import org.evomaster.dbconstraint.ast.SqlIsNotNullCondition;16import org.evomaster.dbconstraint.ast.SqlIsNullCondition;17import org.evomaster.dbconstraint.ast.SqlLikeCondition;18import org.evomaster.dbconstraint.ast.SqlLiteralValue;19import org.evomaster.dbconstraint.ast.SqlNullLiteralValue;20import org.evomaster.dbconstraint.ast.SqlOrCondition;21import org.evomaster.dbconstraint.ast.SqlSimilarToCondition;22import org.evomaster.dbconstraint.ast.SqlStringLiteralValue;23import java.util.ArrayList;24import java.util.Collections;25import java.util.List;26import java.util.Set;27import java.util.stream.Collectors;28import static org.evomaster.dbconstraint.ast.SqlComparisonOperator.EQUALS_TO;29public class SqlConditionTranslator implements SqlConditionVisitor<TableConstraint, Void> {30 private static final String THIS_METHOD_SHOULD_NOT_BE_INVOKED = "This method should not be directly called";31 public static final String UNEXPECTED_COMPARISON_OPERATOR_MESSAGE = "Unexpected comparison operator ";32 private final TranslationContext translationContext;33 public SqlConditionTranslator(TranslationContext translationContext) {34 this.translationContext = translationContext;35 }36 /**37 * FIXME38 * temporary workaround before major refactoring.39 * Recall that Column.getTable() is not reliable40 */41 private String getTableName(SqlColumn column) {42 String tableName = column.getTableName();43 if (tableName != null) {44 return tableName;45 } else {46 return this.translationContext.getCurrentTableName();47 }48 }49 @Override50 public TableConstraint visit(SqlAndCondition andExpression, Void argument) {51 TableConstraint left = andExpression.getLeftExpr().accept(this, null);52 TableConstraint right = andExpression.getRightExpr().accept(this, null);53 return new AndConstraint(translationContext.getCurrentTableName(), left, right);54 }55 @Override56 public TableConstraint visit(SqlComparisonCondition e, Void argument) {57 SqlCondition left = e.getLeftOperand();58 SqlCondition right = e.getRightOperand();59 if (left instanceof SqlLiteralValue && right instanceof SqlColumn) {60 SqlLiteralValue leftLiteral = (SqlLiteralValue) left;61 SqlColumn rightColumn = (SqlColumn) right;62 return visit(leftLiteral, e, rightColumn);63 } else if (left instanceof SqlColumn && right instanceof SqlLiteralValue) {64 SqlColumn leftColumn = (SqlColumn) left;65 SqlLiteralValue rightLiteral = (SqlLiteralValue) right;66 return visit(leftColumn, e, rightLiteral);67 } else if (left instanceof SqlCondition && right instanceof SqlCondition) {68 TableConstraint leftTableConstraint = e.getLeftOperand().accept(this, null);69 TableConstraint rightTableConstraint = e.getRightOperand().accept(this, null);70 if (e.getSqlComparisonOperator().equals(EQUALS_TO)) {71 return new IffConstraint(translationContext.getCurrentTableName(), leftTableConstraint, rightTableConstraint);72 }73 }74 // TODO This translation should be implemented75 throw new SqlCannotBeTranslatedException(e.toSql() + " cannot be translated yet");76 }77 private TableConstraint visit(SqlColumn leftColumn, SqlComparisonCondition e, SqlLiteralValue rightLiteral) {78 final String tableName = getTableName(leftColumn);79 final String columnName = leftColumn.getColumnName();80 if (rightLiteral instanceof SqlBigIntegerLiteralValue) {81 long value = ((SqlBigIntegerLiteralValue) rightLiteral).getBigInteger().longValue();82 switch (e.getSqlComparisonOperator()) {83 case EQUALS_TO:84 return new RangeConstraint(tableName, columnName, value, value);85 case GREATER_THAN:86 return new LowerBoundConstraint(tableName, columnName, value + 1);87 case GREATER_THAN_OR_EQUAL:88 return new LowerBoundConstraint(tableName, columnName, value);89 case LESS_THAN:90 return new UpperBoundConstraint(tableName, columnName, value - 1);91 case LESS_THAN_OR_EQUAL:92 return new UpperBoundConstraint(tableName, columnName, value);93 default:94 throw new UnsupportedOperationException(UNEXPECTED_COMPARISON_OPERATOR_MESSAGE + e.getSqlComparisonOperator());95 }96 } else if (rightLiteral instanceof SqlStringLiteralValue) {97 SqlStringLiteralValue stringLiteralValue = (SqlStringLiteralValue) rightLiteral;98 if (e.getSqlComparisonOperator().equals(EQUALS_TO)) {99 return new EnumConstraint(tableName, columnName, Collections.singletonList(stringLiteralValue.getStringValue()));100 } else {101 throw new UnsupportedOperationException(UNEXPECTED_COMPARISON_OPERATOR_MESSAGE + e.getSqlComparisonOperator());102 }103 } else {104 throw new UnsupportedOperationException("Unsupported literal " + rightLiteral);105 }106 }107 private TableConstraint visit(SqlLiteralValue leftLiteral, SqlComparisonCondition e, SqlColumn rightColumn) {108 if (leftLiteral instanceof SqlBigIntegerLiteralValue) {109 long value = ((SqlBigIntegerLiteralValue) leftLiteral).getBigInteger().longValue();110 final String tableName = getTableName(rightColumn);111 final String columnName = rightColumn.getColumnName();112 switch (e.getSqlComparisonOperator()) {113 case EQUALS_TO:114 return new RangeConstraint(tableName, columnName, value, value);115 case GREATER_THAN:116 return new UpperBoundConstraint(tableName, columnName, value - 1);117 case GREATER_THAN_OR_EQUAL:118 return new UpperBoundConstraint(tableName, columnName, value);119 case LESS_THAN:120 return new LowerBoundConstraint(tableName, columnName, value + 1);121 case LESS_THAN_OR_EQUAL:122 return new LowerBoundConstraint(tableName, columnName, value);123 default:124 throw new UnsupportedOperationException(UNEXPECTED_COMPARISON_OPERATOR_MESSAGE + e.getSqlComparisonOperator());125 }126 } else {127 throw new UnsupportedOperationException("Unsupported literal " + e.getSqlComparisonOperator());128 }129 }130 @Override131 public TableConstraint visit(SqlInCondition inExpression, Void argument) {132 SqlColumn column = inExpression.getSqlColumn();133 String tableName = getTableName(column);134 String columnName = column.getColumnName();135 SqlConditionList rightItemsList = inExpression.getLiteralList();136 List<String> stringValues = new ArrayList<>();137 for (SqlCondition expressionValue : rightItemsList.getSqlConditionExpressions()) {138 final String stringValue;139 if (expressionValue instanceof SqlStringLiteralValue) {140 stringValue = new StringValue(expressionValue.toSql()).getNotExcapedValue();141 } else {142 stringValue = expressionValue.toSql();143 }144 stringValues.add(stringValue);145 }146 return new EnumConstraint(tableName, columnName, stringValues);147 }148 @Override149 public TableConstraint visit(SqlNullLiteralValue e, Void argument) {150 throw new UnsupportedOperationException(THIS_METHOD_SHOULD_NOT_BE_INVOKED);151 }152 @Override153 public TableConstraint visit(SqlStringLiteralValue e, Void argument) {154 throw new UnsupportedOperationException(THIS_METHOD_SHOULD_NOT_BE_INVOKED);155 }156 @Override157 public TableConstraint visit(SqlConditionList e, Void argument) {158 throw new UnsupportedOperationException(THIS_METHOD_SHOULD_NOT_BE_INVOKED);159 }160 @Override161 public TableConstraint visit(SqlIsNotNullCondition e, Void argument) {162 String tableName = getTableName(e.getColumn());163 String columnName = e.getColumn().getColumnName();...

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