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167
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1 package IMPL::SQL::Schema::Constraint;
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49
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2 use strict;
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167
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3 use warnings;
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4
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5 use IMPL::lang qw(:declare :constants is);
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6
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165
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7 use parent qw(IMPL::Object IMPL::Object::Disposable);
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49
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8
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9 use IMPL::Class::Property::Direct;
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10
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11 BEGIN {
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167
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12 public _direct property name => PROP_GET;
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13 public _direct property table => PROP_GET;
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14 }
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15
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167
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16 public property columns => PROP_GET | PROP_LIST | PROP_OWNERSET;
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17
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168
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18 my %aliases;
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19
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49
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20 sub CTOR {
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21 my ($this,%args) = @_;
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167
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22 is( $args{table}, typeof IMPL::SQL::Schema::Table ) or
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23 die new IMPL::InvalidArgumentException("table argument must be a table object");
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165
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24 $this->{$name} = $args{'name'};
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25 $this->{$table} = $args{'table'};
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26 $this->columns( [map { ResolveColumn($this->table,$_) } @{$args{'columns'}}] );
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49
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27 }
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28
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29 sub ResolveColumn {
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30 my ($Table,$Column) = @_;
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31
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32 my $cn = UNIVERSAL::isa($Column,'IMPL::SQL::Schema::Column') ? $Column->name : $Column;
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33
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34 my $resolved = $Table->GetColumn($cn);
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35 die new IMPL::InvalidOperationException("The column is not found in the table", $cn, $Table->name) if not $resolved;
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36 return $resolved;
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37 }
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38
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39 sub HasColumn {
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40 my ($this,@Columns) = @_;
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41
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42 my %Columns = map { $_, 1} @Columns;
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43
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44 return scalar(grep { $Columns{$_->name} } $this->columns ) == scalar(@Columns);
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49
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45 }
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46
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165
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47 sub uniqName {
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49
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48 my ($this) = @_;
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49 return $this->{$table}->name.'_'.$this->{$name};
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49
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50 }
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51
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52 sub Dispose {
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53 my ($this) = @_;
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54
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55 $this->columns([]);
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56
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57 delete $$this{$table};
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58
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59 $this->SUPER::Dispose;
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60 }
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167
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61
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62 sub SameValue {
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63 my ($this,$other) = @_;
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64
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65 return 0 unless $this->columns->Count == $other->columns->Count;
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66
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67 for ( my $i=0; $i < $this->columns->Count; $i++ ) {
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68 return 0 unless $this->columns->[$i]->name eq $other->columns->[$i]->name;
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69 }
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70
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71 return 1;
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72 }
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168
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73
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74 sub ResolveAlias {
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75 my ($self,$alias) = @_;
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76
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77 return is($alias, typeof IMPL::SQL::Schema::Constraint) ? $alias : $aliases{$alias};
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78 }
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79
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80 sub RegisterAlias {
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81 my ($self,$alias) = @_;
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82
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83 $aliases{$alias} = $self->typeof;
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84 }
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85
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86 1;
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