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[jOOQ/jOOQ#11704] Support floating point NaN and (-)Infinity (WIP)

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This commit is contained in:
Lukas Eder 2021-03-23 13:36:19 +01:00
parent a1b22b1716
commit e2cecab034
1 changed files with 47 additions and 17 deletions
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64
jOOQ/src/main/java/org/jooq/impl/DefaultBinding.java
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@ -76,10 +76,15 @@ import static org.jooq.SQLDialect.SQLITE;
// ...
import static org.jooq.conf.ParamType.INLINED;
import static org.jooq.impl.DSL.cast;
import static org.jooq.impl.DSL.field;
import static org.jooq.impl.DSL.inline;
import static org.jooq.impl.DSL.log;
import static org.jooq.impl.DSL.name;
import static org.jooq.impl.DSL.power;
import static org.jooq.impl.DSL.sqrt;
import static org.jooq.impl.DSL.using;
import static org.jooq.impl.DefaultBinding.DefaultDoubleBinding.infinity;
import static org.jooq.impl.DefaultBinding.DefaultDoubleBinding.nan;
import static org.jooq.impl.DefaultExecuteContext.localTargetConnection;
import static org.jooq.impl.DefaultExecuteContext.targetPreparedStatement;
import static org.jooq.impl.Keywords.K_ARRAY;
@ -111,6 +116,7 @@ import static org.jooq.impl.SQLDataType.DOUBLE;
import static org.jooq.impl.SQLDataType.INTEGER;
import static org.jooq.impl.SQLDataType.LONGVARCHAR;
import static org.jooq.impl.SQLDataType.OTHER;
import static org.jooq.impl.SQLDataType.REAL;
import static org.jooq.impl.SQLDataType.ROWID;
import static org.jooq.impl.SQLDataType.SMALLINT;
import static org.jooq.impl.SQLDataType.TIME;
@ -2323,24 +2329,50 @@ public class DefaultBinding<T, U> implements Binding<T, U> {
/**
* Generated UID
*/
private static final long serialVersionUID = -615723070592774059L;
private static final Set<SQLDialect> REQUIRE_NAN_CAST = SQLDialect.supportedBy(POSTGRES);
private static final long serialVersionUID = -615723070592774059L;
DefaultDoubleBinding(DataType<Double> dataType, Converter<Double, U> converter) {
super(dataType, converter);
}
@SuppressWarnings({ "unchecked", "rawtypes" })
static final Field<?> nan(BindingSQLContext<?> ctx, DataType<?> type) {
switch (ctx.family()) {
case FIREBIRD:
return log(inline(1), inline(1));
case H2:
return sqrt(inline(-1));
case HSQLDB:
return inline(0.0).div(field("0.0e0", (DataType) type));
default:
return inline("NaN").cast(type);
}
}
@SuppressWarnings({ "unchecked", "rawtypes" })
static final Field<?> infinity(BindingSQLContext<?> ctx, DataType<?> type, boolean negative) {
switch (ctx.family()) {
case FIREBIRD:
return log(negative ? inline(0.5) : inline(1.5), inline(1));
case H2:
return negative ? power(inline(0), inline(-1)).neg() : power(inline(0), inline(-1));
case HSQLDB:
return inline(negative ? -1.0 : 1.0).div(field("0.0e0", (DataType) type));
default:
return inline(negative ? "-Infinity" : "Infinity").cast(type);
}
}
@Override
final void sqlInline0(BindingSQLContext<U> ctx, Double value) {
// [#5249] [#6912] [#8063] [#11701] Special inlining of special floating point values
if (value.isNaN() || value.isInfinite())
if (REQUIRE_NAN_CAST.contains(ctx.dialect()))
ctx.render().visit(inline(value.toString())).sql("::float8");
else if (ctx.family() == HSQLDB)
ctx.render().visit(sqrt(inline(-1)));
else
ctx.render().visit(new CastNative<>(inline(value.toString()), DOUBLE));
if (value.isNaN())
ctx.render().visit(nan(ctx, DOUBLE));
else if (value == Double.POSITIVE_INFINITY)
ctx.render().visit(infinity(ctx, DOUBLE, false));
else if (value == Double.NEGATIVE_INFINITY)
ctx.render().visit(infinity(ctx, DOUBLE, true));
else
ctx.render().sql(value);
}
@ -2496,7 +2528,6 @@ public class DefaultBinding<T, U> implements Binding<T, U> {
* Generated UID
*/
private static final long serialVersionUID = -2468794191255859536L;
private static final Set<SQLDialect> REQUIRE_NAN_CAST = SQLDialect.supportedBy(POSTGRES);
DefaultFloatBinding(DataType<Float> dataType, Converter<Float, U> converter) {
super(dataType, converter);
@ -2506,13 +2537,12 @@ public class DefaultBinding<T, U> implements Binding<T, U> {
final void sqlInline0(BindingSQLContext<U> ctx, Float value) {
// [#5249] [#6912] [#8063] [#11701] Special inlining of special floating point values
if (value.isNaN() || value.isInfinite())
if (REQUIRE_NAN_CAST.contains(ctx.dialect()))
ctx.render().visit(inline(value.toString())).sql("::float4");
else if (ctx.family() == HSQLDB)
ctx.render().visit(sqrt(inline(-1)));
else
ctx.render().visit(new CastNative<>(inline(value.toString()), DOUBLE));
if (value.isNaN())
ctx.render().visit(nan(ctx, REAL));
else if (value == Double.POSITIVE_INFINITY)
ctx.render().visit(infinity(ctx, REAL, false));
else if (value == Double.NEGATIVE_INFINITY)
ctx.render().visit(infinity(ctx, REAL, true));
else
ctx.render().sql(value);
}