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DatabendConstant.java
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493 lines (398 loc) · 13.9 KB
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package sqlancer.databend.ast;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import sqlancer.databend.DatabendSchema.DatabendDataType;
public abstract class DatabendConstant implements DatabendExpression {
private DatabendConstant() {
}
public boolean isNull() {
return false;
}
public boolean isInt() {
return false;
}
public boolean isBoolean() {
return false;
}
public boolean isString() {
return false;
}
public boolean isFloat() {
return false;
}
public abstract DatabendConstant cast(DatabendDataType dataType);
public boolean asBoolean() {
throw new UnsupportedOperationException(this.toString());
}
public long asInt() {
throw new UnsupportedOperationException(this.toString());
}
public String asString() {
throw new UnsupportedOperationException(this.toString());
}
public double asFloat() {
throw new UnsupportedOperationException(this.toString());
}
protected Timestamp truncateTimestamp(long val) {
// Databend supports `date` and `timestamp` type where the year cannot exceed `9999`,
// the value is truncated to ensure generate legitimate `date` and `timestamp` value.
long t = val % 253380000000000L;
return new Timestamp(t);
}
public abstract DatabendConstant isEquals(DatabendConstant rightVal);
public abstract DatabendConstant isLessThan(DatabendConstant rightVal);
// public abstract String getTextRepresentation();
public static class DatabendNullConstant extends DatabendConstant {
@Override
public String toString() {
return "NULL";
}
@Override
public boolean isNull() {
return true;
}
@Override
public DatabendConstant cast(DatabendDataType dataType) {
return DatabendConstant.createNullConstant();
}
@Override
public DatabendConstant isEquals(DatabendConstant rightVal) {
return DatabendConstant.createNullConstant();
}
@Override
public DatabendConstant isLessThan(DatabendConstant rightVal) {
return DatabendConstant.createNullConstant();
}
@Override
public DatabendDataType getExpectedType() {
return DatabendDataType.NULL;
}
// @Override
// public DatabendConstant getExpectedValue() {
// return super.getExpectedValue();
// }
}
public static class DatabendIntConstant extends DatabendConstant {
private final long value;
public DatabendIntConstant(long value) {
this.value = value;
}
@Override
public String toString() {
return String.valueOf(value);
}
public long getValue() {
return value;
}
@Override
public boolean isInt() {
return true;
}
@Override
public DatabendConstant cast(DatabendDataType dataType) {
switch (dataType) {
case BOOLEAN:
return new DatabendBooleanConstant(value != 0);
case INT:
return this;
case VARCHAR:
return new DatabendStringConstant(String.valueOf(value));
case DATE:
return new DatabendDateConstant(value);
case TIMESTAMP:
return new DatabendTimestampConstant(value);
default:
return null;
}
}
@Override
public long asInt() {
return value;
}
@Override
public DatabendConstant isEquals(DatabendConstant rightVal) {
if (rightVal.isNull()) {
return DatabendConstant.createNullConstant();
} else if (rightVal.isInt()) {
return DatabendConstant.createBooleanConstant(value == rightVal.asInt());
} else {
throw new AssertionError(rightVal);
}
}
@Override
public DatabendConstant isLessThan(DatabendConstant rightVal) {
if (rightVal.isNull()) {
return DatabendConstant.createNullConstant();
} else if (rightVal.isInt()) {
return DatabendConstant.createBooleanConstant(value < rightVal.asInt());
} else if (rightVal.isFloat()) {
return DatabendConstant.createBooleanConstant(value < rightVal.asFloat());
} else {
throw new AssertionError(rightVal);
}
}
@Override
public DatabendDataType getExpectedType() {
return DatabendDataType.INT;
}
}
public static class DatabendFloatConstant extends DatabendConstant {
private final double value;
public DatabendFloatConstant(double value) {
this.value = value;
}
public double getValue() {
return value;
}
@Override
public boolean isFloat() {
return true;
}
@Override
public String toString() {
if (value == Double.POSITIVE_INFINITY) {
return "3.40282347e+38";
} else if (value == Double.NEGATIVE_INFINITY) {
return "-3.40282347e+38";
}
return String.valueOf(value);
}
@Override
public DatabendConstant cast(DatabendDataType dataType) {
switch (dataType) {
case FLOAT:
return this;
case INT:
return DatabendConstant.createIntConstant((long) value);
case BOOLEAN:
return DatabendConstant.createBooleanConstant(value != 0);
case VARCHAR:
return DatabendConstant.createStringConstant(String.valueOf(value));
default:
return null;
}
}
@Override
public double asFloat() {
return value;
}
@Override
public DatabendConstant isEquals(DatabendConstant rightVal) {
return null;
}
@Override
public DatabendConstant isLessThan(DatabendConstant rightVal) {
if (rightVal.isNull()) {
return DatabendConstant.createNullConstant();
} else if (rightVal.isInt()) {
return DatabendConstant.createBooleanConstant(value < rightVal.asInt());
} else if (rightVal.isFloat()) {
return DatabendConstant.createBooleanConstant(value < rightVal.asFloat());
} else {
throw new AssertionError(rightVal);
}
}
}
public static class DatabendStringConstant extends DatabendConstant {
private final String value;
public DatabendStringConstant(String value) {
this.value = value;
}
public String getValue() {
return value;
}
@Override
public String toString() {
return "'" + value.replace("'", "''") + "'";
}
@Override
public String asString() {
return value;
}
@Override
public boolean isString() {
return true;
}
@Override
public DatabendConstant cast(DatabendDataType dataType) {
switch (dataType) {
case VARCHAR:
return this;
case INT:
try {
return new DatabendIntConstant(Long.parseLong(value));
} catch (NumberFormatException e) {
return new DatabendIntConstant(-1);
}
case BOOLEAN:
if ("false".contentEquals(value.toLowerCase())) {
return new DatabendBooleanConstant(false);
} else if ("true".contentEquals(value.toLowerCase())) {
return new DatabendBooleanConstant(true);
} else {
throw new AssertionError(String.format("string: %s, cannot be forced to boolean", value));
}
case FLOAT:
try {
return new DatabendFloatConstant(Double.parseDouble(value));
} catch (NumberFormatException e) {
return new DatabendFloatConstant(-1);
}
default:
return null;
}
}
@Override
public DatabendConstant isEquals(DatabendConstant rightVal) {
if (rightVal.isNull()) {
return DatabendConstant.createNullConstant();
} else if (rightVal.isString()) {
return DatabendConstant.createBooleanConstant(value.contentEquals(rightVal.asString()));
} else {
// TODO 可以比较 date和timestamp类型，待添加
throw new AssertionError(rightVal);
}
}
@Override
public DatabendConstant isLessThan(DatabendConstant rightVal) {
if (rightVal.isNull()) {
return DatabendConstant.createNullConstant();
} else if (rightVal.isString()) {
return DatabendConstant.createBooleanConstant(value.compareTo(rightVal.asString()) < 0);
} else {
throw new AssertionError(rightVal);
}
}
}
public static class DatabendDateConstant extends DatabendConstant {
public String textRepr;
public DatabendDateConstant(long val) {
Timestamp timestamp = truncateTimestamp(val);
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
textRepr = dateFormat.format(timestamp);
}
public String getValue() {
return textRepr;
}
@Override
public String toString() {
return String.format("DATE '%s'", textRepr);
}
@Override
public DatabendConstant cast(DatabendDataType dataType) {
return null;
}
@Override
public DatabendConstant isEquals(DatabendConstant rightVal) {
return null;
}
@Override
public DatabendConstant isLessThan(DatabendConstant rightVal) {
return null;
}
}
public static class DatabendTimestampConstant extends DatabendConstant {
public String textRepr;
public DatabendTimestampConstant(long val) {
Timestamp timestamp = truncateTimestamp(val);
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
textRepr = dateFormat.format(timestamp);
}
public String getValue() {
return textRepr;
}
@Override
public String toString() {
return String.format("TIMESTAMP '%s'", textRepr);
}
@Override
public DatabendConstant cast(DatabendDataType dataType) {
return null;
}
@Override
public DatabendConstant isEquals(DatabendConstant rightVal) {
return null;
}
@Override
public DatabendConstant isLessThan(DatabendConstant rightVal) {
return null;
}
}
public static class DatabendBooleanConstant extends DatabendConstant {
private final boolean value;
public DatabendBooleanConstant(boolean value) {
this.value = value;
}
public boolean getValue() {
return value;
}
@Override
public String toString() {
return String.valueOf(value);
}
@Override
public boolean asBoolean() {
return value;
}
@Override
public boolean isBoolean() {
return true;
}
@Override
public DatabendConstant cast(DatabendDataType dataType) {
switch (dataType) {
case BOOLEAN:
return this;
case INT:
return new DatabendIntConstant(value ? 1 : 0);
case FLOAT:
return new DatabendFloatConstant(value ? 1 : 0);
case VARCHAR:
return new DatabendStringConstant(value ? "1" : "0");
default:
return null;
}
}
@Override
public DatabendConstant isEquals(DatabendConstant rightVal) {
if (rightVal.isNull()) {
return DatabendConstant.createNullConstant();
} else if (rightVal.isBoolean()) {
return DatabendConstant.createBooleanConstant(value == rightVal.asBoolean());
} else {
throw new AssertionError(rightVal);
}
}
@Override
public DatabendConstant isLessThan(DatabendConstant rightVal) {
if (rightVal.isNull()) {
return DatabendConstant.createNullConstant();
} else if (rightVal.isBoolean()) {
return DatabendConstant.createBooleanConstant((value ? 1 : 0) < (rightVal.asBoolean() ? 1 : 0));
} else {
throw new AssertionError(rightVal);
}
}
}
public static DatabendConstant createStringConstant(String text) {
return new DatabendStringConstant(text);
}
public static DatabendConstant createFloatConstant(double val) {
return new DatabendFloatConstant(val);
}
public static DatabendConstant createIntConstant(long val) {
return new DatabendIntConstant(val);
}
public static DatabendConstant createNullConstant() {
return new DatabendNullConstant();
}
public static DatabendConstant createBooleanConstant(boolean val) {
return new DatabendBooleanConstant(val);
}
public static DatabendConstant createDateConstant(long integer) {
return new DatabendDateConstant(integer);
}
public static DatabendConstant createTimestampConstant(long integer) {
return new DatabendTimestampConstant(integer);
}
}